Malicious PDF — malware analysis report

Static analysis result for SHA-256 04de2439d8149336…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 00:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fa85499de0703383b7f143a7292c251 SHA-1: ce4874483df508c78b556ad590ebc16378763abe SHA-256: 04de2439d8149336ff3a0fdbd7b2b77b2a7491fa9f194926d83fd90f200a7aa6
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'shaman leveling guide'. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy to potentially improve search engine ranking for malicious content or to distribute payloads. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ttraff.cc/pify?keyword=enh+shaman+leveling+guide+3.+3.+5
    • http://fabag.holyangelschicago.com/uploads/1/3/2/6/132680955/rerefel_pivowijomus_nikotegekexo_tevuxuruwudul.pdf
    • http://files.houghtonrangersjuniors.co.uk/uploads/1/3/0/7/130775014/zidumaragizuf.pdf
    • http://files.acecric.org/uploads/1/3/2/7/132740804/wefobidode.pdf
    • http://xavapuf.cerritosxc.com/uploads/1/3/1/3/131380600/9c7a9561b.pdf
    • http://files.misstimstravels.com/uploads/1/3/0/8/130814397/4918b0a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/moonlight_greatsword_ds2.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/carbide_insert_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/lodenosizadusakixipukop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/49097818130.pdf
    • https://cdn.shopify.com/s/files/1/0437/8358/5949/files/big_data_analytics_with_hadoop_3_sridhar_alla.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/kipetapu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/73979435364.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/98964303103.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/74168925945.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_off00006714.bin
cc28aa11cd3e877566fa64c58a3041bf93d83ea03b88521eba41b028046490a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6714 5480 bytes
font_01_sfnt_off0000799f.bin
02bbfd63ab17cc1727b16a179bf41503c2173103f1f6b4eddfbbecac0bd5355f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799F 11104 bytes

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