Malicious PDF — malware analysis report

Static analysis result for SHA-256 300fdf691fb356c5…

MALICIOUS

PDF

116.3 KB Created: 2020-11-13 05:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bcf71a1fe6d37417f26152fdabf27c5 SHA-1: 5fc802ca75e80c062bcb137920693b0a1fa7e151 SHA-256: 300fdf691fb356c56dafaa39d5cae411a7142f80fdc96391419d4f037c5ec926
202 Risk Score

Malware Insights

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

The sample is a PDF document that contains embedded URLs, one of which is flagged as a malicious redirector. Heuristics indicate it uses an urgency lure and an advance-fee scam lure, suggesting a phishing or fraud attempt. The ML classifier strongly flags it as malicious, and ClamAV also detects it as a phishing trojan. No scripts were extracted, but the presence of malicious links and scam lures points to a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/aws?utm_term=cisco+earnings+report+q3
    • https://cdn-cms.f-static.net/uploads/4419644/normal_5f9b593cd976c.pdf
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f92bd770162c.pdf
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5fab1ef320086.pdf
    • https://cdn-cms.f-static.net/uploads/4374853/normal_5f9d260811f96.pdf
    • https://cdn-cms.f-static.net/uploads/4376612/normal_5f98591600272.pdf
    • https://cdn-cms.f-static.net/uploads/4412394/normal_5fa6f4c492964.pdf
    • https://cdn-cms.f-static.net/uploads/4391624/normal_5fa1b7856dbc0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lanowilovuviwib/29132338826.pdf
    • https://uploads.strikinglycdn.com/files/31a918e2-3cb8-4016-a4c1-b7c76a169a6a/jokamupesedafever.pdf
    • https://uploads.strikinglycdn.com/files/18d1059f-9d83-40fe-b890-068528e8ee4d/48265042585.pdf
    • https://uploads.strikinglycdn.com/files/d097e93a-d5ac-486d-b0fe-9fa7a6dbcc8d/words_that_start_with_bi.pdf
    • https://uploads.strikinglycdn.com/files/00e93996-66ad-4b69-826c-b1ac0a71c848/bizowisezedewutukos.pdf
    • https://s3.amazonaws.com/vixuwogetiv/baldric_de_coucy.pdf
    • https://uploads.strikinglycdn.com/files/2cd93082-5819-46fd-a958-e8f387a0fccf/24382457476.pdf
    • https://uploads.strikinglycdn.com/files/20b14c40-7b4c-4aa3-bd51-283c428dbf2d/plot_development_essay.pdf
    • https://uploads.strikinglycdn.com/files/461618bd-0baa-4f1d-bb2e-8f22081cbb50/xejorovaxejupe.pdf
    • https://uploads.strikinglycdn.com/files/d0051354-39ef-4e9b-be90-5f1af51046da/biology_review_5_genetics_answers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017aef.bin
37f272ccebbcf8890edcd8df6f45ed253cf433d1095c0aa31dbe975b281bd86b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17AEF 5172 bytes
font_01_sfnt_off00018c89.bin
c18964fb3786d145ad60e27564626af51109315555e9f7dd7c78ffb96362edee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18C89 12356 bytes
font_02_sfnt_off0001b5e8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5E8 4324 bytes

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