Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfdb74548e13e3c…

MALICIOUS

PDF

83.5 KB Created: 2021-09-02 03:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e09e4a00d98accdbd3da718f3af2cc37 SHA-1: 3618f2f50a8b8b6929079a1cabe0f41019dec4c2 SHA-256: abfdb74548e13e3cfacd9cd0237dd9f59b1d160049373267748e3ea2ab172fb9
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable hosting, characteristic of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to exploit vulnerabilities or redirect users to malicious sites. The file's structure as a link farm suggests an attempt to lure users into clicking malicious links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://huntic.ru/uplcv?utm_term=breast+giver+by+mahasweta+devi+summary PDF link annotation
    • https://ketdoanbus.com/webroot/img/files/37277698205.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/d2bb353ec61d833ea225d1dc45024571/fapujoduzavipolotevi.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/a03ef286ce32162d3389cd7e74c7818c/34067715089.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160ee0ddd626cf---raxuxurefu.pdfIn PDF document text
    • https://ottopianos.nl/files/nenelakawukexavelixe.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/eaf3645ed252ff054846977dbefb28fe/75547403939.pdfIn PDF document text
    • https://aymexco.eu/ckfinder/userfiles/files/73863911092.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2cd7ea67d---nefifedixukufumi.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/tenazodegipog.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611ee63de1ce1---lejugunamagajukepu.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/e88d99323dbbf6732fcb2fe1169e8e94/72031287526.pdfIn PDF document text
    • http://proreferee.ru/uploads/ckfinder/files/kinomofepivuxesusiv.pdfIn PDF document text
    • http://gfb.it/upload/fck/file/97974846247.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/3deocf1abl75i6vk4g4na86pe7/25604306094.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/rumafetiko.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806be5a17a6---88640099779.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/f9f5ea06a7cb65ac43b662d2596a5a62/3336104511.pdfIn PDF document text
    • http://shmgec.com/Uploadfiles/files/18469817001.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/38052719519.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/76582024717.pdfIn PDF document text
    • http://salkim.com/userfiles/file/62069565282.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/lijokawidusemiwudafa.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_off0000defe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF715 10984 bytes
SHA-256: 90f4045bdfe9a00bef2cab8fea31f7558db6525c535739df2ac097c49576b96e
font_02_sfnt_off00011082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11082 18004 bytes
SHA-256: f13e72e264f551b2603c34b7de27d960067a8fe873c9fca502dc93f676c7d6c9

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