Malicious PDF — malware analysis report

Static analysis result for SHA-256 190d9b85967384af…

MALICIOUS

PDF

89.9 KB Created: 2021-04-03 19:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bae4d8b1d99b268cd7b47c248300de97 SHA-1: 9c947e601bdc25768c2da5fc6a154955bc88d381 SHA-256: 190d9b85967384af6c488bddaa34fc4fb7277370f86e9c3f50a654aff6824b5f
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 0.9998

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://jottigo.ru/123?utm_term=wow+classic+druid+leveling+guide+deutsch PDF link annotation
    • http://lorebip.22web.org/liluw.pdfIn PDF document text
    • http://art-practice.org/68898069134cdjuz.pdfIn PDF document text
    • http://jogebavipe.iblogger.org/cpr_aed_course_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/ghOgdrs/tebuxoxipax.pdfIn PDF document text
    • http://selectgetc.top/xuwekigofozegilamtx9q.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/63138121757tcb07.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/4411644.pdfIn PDF document text
    • http://lavkavkusa.store/castle_learning_answersjh799.pdfIn PDF document text
    • https://kivenawuvu.weebly.com/uploads/1/3/1/1/131163776/5990633.pdfIn PDF document text
    • http://nawireg.22web.org/46700689404.pdfIn PDF document text
    • https://cdn.sqhk.co/mofosalamo/UJAcpp1/flipgrid_app_icon.pdfIn PDF document text
    • http://woodbonus.net/the_history_of_middle-earth_12_volume_set3owlm.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/firigugixujotov/73935330711.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/buddha_and_his_dhamma_english_download.pdfIn PDF document text
    • http://puzekuzabi.epizy.com/genetic_engineering_grade_12_notes.pdfIn PDF document text
    • http://zezazemana.epizy.com/27450131788.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/tunirosirelevinezogudag.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/gudeleziwigodib.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/pivaza.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
    • 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_off00010c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C69 5368 bytes
SHA-256: 35dd8e59d50375b02590927efd9c1a64b5d987af5908ee4a156e6c57000ccc42
font_01_sfnt_off00011ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBD 11124 bytes
SHA-256: daacf51459a9a12cfb94a24dc9e0a83f226cbae69b0b9fbb42f7c4d776054cca
font_02_sfnt_off000144d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144D9 16096 bytes
SHA-256: 9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61

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