Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2caa2f87d936fe…

MALICIOUS

PDF

66.8 KB Created: 2020-12-23 21:10:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4848fecbc1c4ded968f9fa9dca7639e SHA-1: d99935e846c728d80ae5f340310798b05c969424 SHA-256: fc2caa2f87d936fe76fc5acc6936eba683ea2b2547050a69beb15889b4a05f13
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1105 Ingress Tool Transfer

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Sling tv customer service phone number'. The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing or scam attempt. The primary attack pattern involves tricking the user into interacting with malicious links or calling a fraudulent number.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://traffmen.ru/strik?utm_term=sling+tv+customer+service+phone+number+please
    • https://cdn.sqhk.co/jozojijejip/zjjn3ic/cheetah_top_speed_km_h.pdf
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f87579970773.pdf
    • https://wumefabifu.weebly.com/uploads/1/3/4/8/134888429/pijon-kidorigirelus-denumexulo-liraj.pdf
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f8cbcd040463.pdf
    • https://cdn-cms.f-static.net/uploads/4402956/normal_5f985605af80a.pdf
    • https://cdn-cms.f-static.net/uploads/4467955/normal_5fd38bdfe9e11.pdf
    • https://cdn.sqhk.co/weteroliwo/RDJvnRG/run_run_as_fast_as_you_can_shrek.pdf
    • https://cdn-cms.f-static.net/uploads/4417990/normal_5fbacdac255fb.pdf
    • https://labufixurugon.weebly.com/uploads/1/3/4/8/134873424/4512769.pdf
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5fa7849150ffd.pdf
    • https://cdn-cms.f-static.net/uploads/4467571/normal_5fb98c014040c.pdf
    • https://patewowuxafopon.weebly.com/uploads/1/3/4/5/134595548/8b0a1f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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_off0000bb3d.bin
00817f44d4596d66b05491f05005f36e52b8f8b4046106dfd3ba2993eeb87ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB3D 5532 bytes
font_01_sfnt_off0000cdd9.bin
e4d639a9abefe49487ed4fb54a51de66c3e1d9ee464118c1ca0c3b8136f79c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD9 10108 bytes
font_02_sfnt_off0000f00d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 4324 bytes

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