Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3acae69839b0865…

MALICIOUS

PDF

91.6 KB Created: 2021-07-04 06:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7079975f6487be27071bce71165b30e5 SHA-1: fcc7074d531ae2e7b681739156cab85ccd5319eb SHA-256: a3acae69839b08654c7489c39f43b16a5f98467457a9cb5b915d31bd30b8d371
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or scam attempt. The 'SE_CALLBACK_LURE' heuristic suggests the document prompts the user to call a phone number, a common tactic in callback phishing and tech-support scams. The presence of numerous external URLs, many pointing to compromised CMS uploads or disposable hosting, further supports a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the document's structure and heuristics point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://garglob.ru/uplcv?utm_term=compliance+manual+hedge+fund PDF link annotation
    • http://podiummoda.ru/userfiles/file/bufege.pdfIn PDF document text
    • http://eau-msu.ru/ckfinder/userfiles/files/werexoboxejulevuj.pdfIn PDF document text
    • http://tuclubcr.com/campannas/file/75209579894.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/9ed3b3d56480c601a20386e29763c2dc/tomovovuzegugidig.pdfIn PDF document text
    • https://chaplains-camps.org/upload_picture/file/42517042518.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/dozebesufade.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/33de75723b82005b807d7fdd1251d1fc/35858166214.pdfIn PDF document text
    • http://richfield1960.com/clients/865265/File/49307556189.pdfIn PDF document text
    • http://arablift.net/userfiles/file/93751501865.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/rilobekevunet.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac9a5b7086---jukezumisopip.pdfIn PDF document text
    • https://cbconsulting112.ca/userfiles/files/fozapuledeliduwefide.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a009557cc36---waxawobitizeza.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/31487854591.pdfIn PDF document text
    • http://nelly-design.ru/upload/files/34478792860.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/ba7f828d70519a49d9ef0e6448801815/jirilinogu.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/4h0a507dl6k2vtmp5l1vge1qek/biseluruxufugexowofilu.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16090f0d83c58a---78520228517.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfbd690875---91843003213.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/35005529569.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/84230871858.pdfIn PDF document text
    • http://vtaky.sk/media/file/togebepazagunogedawot.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/13616470542a48445673d7ca5c39a2b3/dozor.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/xiwidovi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001174d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1174D 10832 bytes
SHA-256: 2eef118586b319f840f1d638bdba9d385717a9b5392f0246d7c93c36606d63f9
font_02_sfnt_off00012fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCE 18040 bytes
SHA-256: 0ee74d4c15461251e2d428ecfeab4dba6c117b2085bc035ff952959448d69f8c

Open this report in the interactive analyzer, or submit your own file for analysis.