Malicious PDF — malware analysis report

Static analysis result for SHA-256 b383806f6d91496d…

MALICIOUS

PDF

87.6 KB Created: 2020-11-11 09:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 671f9cad722360be32231508671cda79 SHA-1: 76cc0f3c3e21065fb279ad805e6eef76b2604724 SHA-256: b383806f6d91496d571bdf3667e16a206e246cb99e68e63d4e55a4af13276bdd
204 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of an advance-fee scam, including urgency lures and a link farm pointing to multiple PDF files hosted on Weebly. The primary URL, traffking.ru, suggests a traffic redirection service likely used to obscure the ultimate destination. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to lead users to phishing or scam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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
  • 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://traffking.ru/123?keyword=area+6+ffa+message+board
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/0f1d81c0d981.pdf
    • https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/kurixibes.pdf
    • https://jadimakadafi.weebly.com/uploads/1/3/4/3/134378671/2899253.pdf
    • https://nozigofomin.weebly.com/uploads/1/3/4/4/134481739/guvomusutepajo.pdf
    • https://fosogaji.weebly.com/uploads/1/3/1/4/131455903/8727960.pdf
    • https://birivuben.weebly.com/uploads/1/3/4/6/134618962/6035407.pdf
    • https://vozupixog.weebly.com/uploads/1/3/4/3/134312338/nekoxob_nivetal_gedilet.pdf
    • https://kodupupagunoj.weebly.com/uploads/1/3/4/3/134314474/4069282.pdf
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/wofezerewetinu_tobudikuwow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fedec045-844e-4626-813f-41f56c579ca2/delta_dental_ppo_premier.pdf
    • https://uploads.strikinglycdn.com/files/d452ec42-528c-42b5-ac76-ebfb891d33d7/wisen.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001176d.bin
7578030bd1eb6120808903fe6efe136161a674a52460ae964e40cca2dfd0d001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1176D 5476 bytes
font_01_sfnt_off000129fb.bin
08463aa2601c1abe248ead2f3a49455934a48e14bcf782deab8f1ce96b59c177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129FB 11644 bytes

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