Malicious PDF — malware analysis report

Static analysis result for SHA-256 0493015e86f11c9d…

MALICIOUS

PDF

79.8 KB Created: 2021-07-07 07:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: d541fbf151c23412a901f02034d678cc SHA-1: 561af60af5d7bf82e695035be14c2a57982bf9cb SHA-256: 0493015e86f11c9d598f3ee7d5e69f0a2f1408b2e775a6090f6e949972b80471
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan distribution attempt. The file functions as a link farm, containing numerous URLs pointing to external sites, many of which are hosted on compromised WordPress upload directories. The primary purpose appears to be directing users to malicious content or further stages of an attack through these compromised or disposable hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

Heuristics 6

  • 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.
  • 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://almoheetmanpower.com/public_html/userfiles/file/61802410452.pdf In PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/e32c0398549b0ee1e92c5a528376c931/110456561.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/91mjpgt48a3vv6nc773fo0q784/78616982496.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/busir.pdfIn PDF document text
    • http://fisioterapiasuzzara.it/userfiles/files/24763090819.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090031b85922---47473836628.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/3f2627fafed5617a8cad0b934bb76b05/58037772919.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8190458d1---kusalomuwiwo.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ce8bbf95b---lasopexosidimilemon.pdfIn PDF document text
    • https://myphambambi.com/webroot/img/files/sikatutekukur.pdfIn PDF document text
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cffe4c8311---bedevodonigozaziwux.pdfIn PDF document text
    • http://aps-mes.com/files/file/5355152775.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083c5ba6f752---90847490229.pdfIn PDF document text
    • https://tepihtrava.rs//files/gozawiruwupapi.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/15351706562.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/43767244481.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/30475341770.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/i5aeg042dbeh5k49gklj9rr70m/41468900085.pdfIn PDF document text
    • http://inse.us/uploads/images//files/fesagozorogavarulivufel.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160840aa49f009---54995880045.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160a03ab06639e---ziwas.pdfIn PDF document text
    • http://gardatrans.com/content/Files/kutuwojurimasigasumipukud.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/0fc081d0bf72b555022e65c3f2ed5435/fiwekexefonolixez.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/fce91f22e9ace550af047aa26f419235/regisefis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=conceptual+design+of+chemical+processesPDF link annotation
    • 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC61 2220 bytes
SHA-256: bc7d330c40909b894edddfcf48abac5aee670fd1c51efca1a70ba705fad62b38
font_01_sfnt_off0000d637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD637 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 11200 bytes
SHA-256: 79041ac72b662f35d70a1e74d5964b625a9ea7990c9759b7f5be9f2d82388531
font_03_sfnt_off00010813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10813 15932 bytes
SHA-256: 04e949f8f5230306e2b2b1be43bed9b2c0f2166add2c02303dec01f5be2f7003

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