Malicious PDF — malware analysis report

Static analysis result for SHA-256 1472d5448470fcec…

MALICIOUS

PDF

35.9 KB Created: 2020-08-10 22:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4f84269cac75a668c89b8bb954b23fb SHA-1: 080268c4661755b866eb429b9603db0d88497243 SHA-256: 1472d5448470fcec43b82cdfef12901e8164ab75587cf3ea319b117231db8f12
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One prominent link directs to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the malicious URL, reinforcing its role as a lure.

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.ru/pify?keyword=aloha+oe+sheet+music+pdf
    • http://files.wildnorthdesignco.com/uploads/1/3/2/6/132696113/semit_dikefokiwoxa_lizin.pdf
    • http://files.olivehillsporthorses.com/uploads/1/3/1/1/131164281/4330305.pdf
    • http://files.mtpskitchengarden.com.au/uploads/1/3/0/7/130775429/nozov_donominesikam_xutiz.pdf
    • http://bojilagu.lorarichards.com/uploads/1/3/1/4/131454065/1f1ccc2496.pdf
    • http://files.willowmoonsoaps.com/uploads/1/3/1/3/131380305/9019135.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/bal_gangadhar_tilak_essay_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/99212532679.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/52706375427.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/python_and_tkinter_programming.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/35023229052.pdf
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/84471345565.pdf
    • https://cdn.shopify.com/s/files/1/0432/8502/0827/files/economics_of_agricultural_production_and_farm_management.pdf
    • https://cdn.shopify.com/s/files/1/0428/9613/0211/files/medixenali.pdf
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/roxafi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/37021716580.pdf
    • https://cdn.shopify.com/s/files/1/0434/2362/9477/files/xufuwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1437/files/arqueologia_prohibida_descargar.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_off00004e6e.bin
0d7696a6a50cb400b76baec4cdbcb27b0fdfc9d7301a57ab6a005dedb85f7df4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6E 5288 bytes
font_01_sfnt_off00006050.bin
8872a987c0bcc71913be725c0ae90a93cd535365b24c02185e6e8aa832b0f79c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 10060 bytes

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