Malicious PDF — malware analysis report

Static analysis result for SHA-256 970e95b3cea8f7c1…

MALICIOUS

PDF

82.2 KB Created: 2021-02-23 00:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 55991fe293a659a70a4991487d036354 SHA-1: 4dc0e61c0cd608d8746a1c7251fa9e697575957a SHA-256: 970e95b3cea8f7c15ed9d772de260538b4077b6e4b171d8dae88b134346b68a2
226 Risk Score

Malware Insights

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

This PDF document is designed as an advance-fee scam, luring victims with promises of a prize or funds contingent on delivery requirements. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm intended to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://baarspo.ru/strik?utm_term=do+you+get+paid+for+disney+college+program PDF link annotation
    • https://baputopozim.weebly.com/uploads/1/3/5/3/135336161/4415a21814590f0.pdfIn PDF document text
    • http://kulapub.22web.org/awk_format_float.pdfIn PDF document text
    • https://bafuzonexive.weebly.com/uploads/1/3/0/7/130739369/3075766.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/Wjgthi8/96131761211.pdfIn PDF document text
    • https://cdn.sqhk.co/develezuwa/j5phaQR/ketamatev.pdfIn PDF document text
    • https://lurenejaxerugu.weebly.com/uploads/1/3/4/7/134728533/7f67b756.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/81c0d38e7.pdfIn PDF document text
    • https://xixirebuwujesi.weebly.com/uploads/1/3/5/9/135989839/xusar.pdfIn PDF document text
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/8711459.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/dgZThab/66838867091.pdfIn PDF document text
    • http://puwofipafemuvif.22web.org/finding_duplicates_in_two_different_excel_sheets.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilapiwet.epizy.com/dotoxixil.pdfIn PDF document text
    • http://lunowakaneruf.rf.gd/deficiencia_de_vitamina_b1.pdfIn PDF document text
    • http://javuxanasojajex.epizy.com/walmart_black_friday_days_and_times.pdfIn PDF document text
    • http://powajokex.rf.gd/lol_fiddlesticks_jungle_guide.pdfIn PDF document text
    • http://sajetubaj.epizy.com/18296001527.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001046a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046A 5576 bytes
SHA-256: 47201a0563c4885e0aaf4b7fd3dfe81de295c408b201905a39713199b8393972
font_01_sfnt_off00011764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11764 10628 bytes
SHA-256: 1c785c7bb8e317499a8deafedbeb4a56226a46c9bf0c14c35a078a8a9d8ac67a

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