Malicious PDF — malware analysis report

Static analysis result for SHA-256 7510c3a8184f6a06…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 06:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6387bfacbd3cfcbde50941ad0aa388e SHA-1: bfa353c1dc6b358aa08f02e0a7fcbb3d345421dd SHA-256: 7510c3a8184f6a0612b29be3e4a0464ef18b80ee237a0629be9a786e4308bc55
154 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is flagged as malicious. The document body appears to be a garbled attempt to present product information, likely as a lure to encourage clicks. The presence of numerous Shopify links, while mostly benign, suggests an attempt to blend malicious content with legitimate-looking resources. No scripts were extracted, but the overall structure and malicious link indicate a phishing or malware distribution attempt.

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.com/wix?keyword=hamilton+beach+smoothie+smart+blender+56206
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/86114337138.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7313/files/44662841135.pdf
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/vikubebagapugulomaluxeboz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/bevepinarozoputusimafo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/vugudadugerenamakukorof.pdf
    • https://cdn.shopify.com/s/files/1/0438/0514/7298/files/xekorulekexotadeluxi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/ibc_amendment_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/33967172099.pdf
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/typical_behavioral_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/notaxumitibabuxefavaluk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/68610964067.pdf
    • https://cdn.shopify.com/s/files/1/0432/4425/7442/files/28329500752.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/97767393525.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/93782565181.pdf
    • https://cdn.shopify.com/s/files/1/0437/0045/3541/files/apgli_application_form_ap.pdf
    • https://cdn.shopify.com/s/files/1/0437/1392/1175/files/cna_study_guide.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_off000064ae.bin
a8905610f93dbbf152f6c92aa1ae352228ddd4d7736df51b7610fe3291f47daa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 5832 bytes
font_01_sfnt_off00007853.bin
f8e6974a74af6d64d7baf20d2b617133dc0a92633e255edcc01053aa53d6ce6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7853 10092 bytes

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