Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7620990ace62911…

MALICIOUS

PDF

69.0 KB Created: 2021-04-04 12:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 02241cbbec32d515364a7cc6bd718aa7 SHA-1: aea1cc3136a492cc6e32367b20b69624beee2232 SHA-256: a7620990ace62911866beb6c0b0139c3e1c030f894c344bd39963b23c5f0be38
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/123?utm_term=industrial+alliance+insurance+dental+claim+form PDF link annotation
    • https://semetipakes.weebly.com/uploads/1/3/0/7/130775831/banegota.pdfIn PDF document text
    • http://gazagidumow.mygamesonline.org/tevebimukemazixip.pdfIn PDF document text
    • http://leporabev.mywebcommunity.org/tipos_de_plan_de_alojamiento.pdfIn PDF document text
    • https://zidifupo.weebly.com/uploads/1/3/4/4/134475425/aaf3b2b5768.pdfIn PDF document text
    • http://jovefupe.mywebcommunity.org/talude.pdfIn PDF document text
    • http://finomimetafix.sportsontheweb.net/turexawuzivebuguxogukusat.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/pelonis_space_heater_reviews.pdfIn PDF document text
    • http://xufuzema.sportsontheweb.net/25453286626.pdfIn PDF document text
    • https://vogifidawavuda.weebly.com/uploads/1/3/1/6/131636702/7515938.pdfIn PDF document text
    • https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/janofezonus-dobeloxeser-rajeruda-tizagafamaroko.pdfIn PDF document text
    • https://wuwuleli.weebly.com/uploads/1/3/1/3/131398564/c27bc7.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/bienestar_animal_en_clinicas_veterinarias.pdfIn PDF document text
    • http://kafidovomiguvo.mywebcommunity.org/wukexodopenogafifomi.pdfIn PDF document text
    • https://kuzapulekoxiror.weebly.com/uploads/1/3/2/6/132681507/baxugoda.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/netafixexajo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/animated_knots_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/atorvastatin_davis_drug_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/98135717550.pdfIn PDF document text
    • https://4123e755-5e7e-4fb8-b167-49ba90d37259.filesusr.com/ugd/fd3290_56a671c789894e6c92981a1d84ad6b89.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/48393686320.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/kuniporeripesise.pdfIn PDF document text
    • https://598a1783-db1d-4ebb-96f5-d3ad23e1e090.filesusr.com/ugd/ae99eb_740b036cec5347d78956694d8f61e370.pdf?index=trueIn PDF document text
    • http://widepidaba.atwebpages.com/ayn_rand_capitalism_the_unknown_ideal.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD163 5104 bytes
SHA-256: 8f34e4b17e97e7f15d09c171e4d85eff61b54c0350829b0c373a4ac4a26c2d27
font_01_sfnt_off0000e2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A8 10408 bytes
SHA-256: 7b000cc2ce70adbc99c06f981bcd4424119a820f263c850abf63032a4e785b26

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