Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1ba6bc754ed075…

MALICIOUS

PDF

73.4 KB Created: 2021-02-21 15:33:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8a7e77a179e0d9779bba194e8b4f807e SHA-1: 55894ac986e7e5812dc1141b4d92bb7256e6cdca SHA-256: 9d1ba6bc754ed075cbe5576648a31c10feb9a88e76cbd4e70dd1febcdb8c1535
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for a phishing trojan. The 'SE_MFA_LURE' heuristic indicates the document is designed to harvest credentials or abuse multi-factor authentication. The embedded URL 'https://jacksth.ru/strik?utm_term=adt+6160+keypad+manual' likely leads to the phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://jacksth.ru/strik?utm_term=adt+6160+keypad+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459055/normal_5ffc8ad8c7eef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466411/normal_60025316e5502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416504/normal_6016d1d82f2c0.pdfIn PDF document text
    • https://cdn.sqhk.co/gunuzuli/hcPRMge/anime_guys_x_reader.pdfIn PDF document text
    • http://profaudit32.ru/what_are_the_important_parts_of_an_online_news_articlewfoxu.pdfIn PDF document text
    • https://josebugovoje.weebly.com/uploads/1/3/0/7/130738719/5193356.pdfIn PDF document text
    • https://lobavasato.weebly.com/uploads/1/3/1/4/131483685/muwonaz.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/BDhehfS/college_hoops_coach_mod_apk.pdfIn PDF document text
    • https://loxoratas.weebly.com/uploads/1/3/4/5/134507201/tikuka-rarejitefijole.pdfIn PDF document text
    • https://cdn.sqhk.co/xovenekot/iXhaYGN/terra_mystica_fire_and_ice_ladder.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fefurorobumi/sekuw.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/9792042627.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/chai_tea_latte_starbucks_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/5th_wave_book_free.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD567 5056 bytes
SHA-256: ac8b78b16cfe445705f8959720e2c5f3f6483efe722dd055e94e6a32754b1857
font_01_sfnt_off0000e68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68D 10452 bytes
SHA-256: f12803a273be3d0e89a33d11d13dcb231162d19aaa1646177319a088910bd67c
font_02_sfnt_off00010a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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