Malicious PDF — malware analysis report

Static analysis result for SHA-256 63226b328e363f67…

MALICIOUS

PDF

49.9 KB Created: 2020-08-12 18:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2ba44a2a88c6d50405ab3166fd690e5 SHA-1: 53f11956ff6bdd52b5ed4f9a1c3557bd8c8f3bd0 SHA-256: 63226b328e363f67aa3f5ee94a9d8f1a74a1027c07d817aa4adf48f02758184f
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as a software crack. The document body and heuristics indicate a lure to click this link, likely to download a secondary payload or redirect to a phishing site. The presence of numerous external PDF links, many pointing to benign content, suggests a link farm or SEO manipulation tactic to obscure the malicious URL.

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/wb?keyword=pdf%20xchange%20viewer%20pro%202.5%20crack
    • http://dofisexi.nkjones.com/uploads/1/3/1/3/131384260/1804e6c.pdf
    • http://files.tymackmotivates.com/uploads/1/3/2/6/132683070/kubuvol-folerofo.pdf
    • http://files.vivotrainingsystems.com/uploads/1/3/1/3/131383943/ruwuvi_lagozizog_jusibusojutape_fajereguga.pdf
    • http://files.meriwetherpaws.org/uploads/1/3/1/4/131407047/c5ffa02b78c031.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/p90x3_nutrition_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/6621/2003/files/36082401.pdf
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/fowidagebipivoditituvopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/malayala_manorama_news_paper_today_palakkad_edition.pdf
    • https://cdn.shopify.com/s/files/1/0445/5255/2612/files/how_to_cite_a_book_purdue_owl.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/66087314300.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/jexujalakagisibekasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5809/files/application_security_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0430/7694/4033/files/kizudupanixewinu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/96187801541.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/96399322779.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_off0000823e.bin
c9b3f78a9b827117a1fdaa784ee6b0b169cf6c1805a881b2906dd5817a44bbc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 5780 bytes
font_01_sfnt_off00009604.bin
1120e016099798e67ed78e3f425889fdb29d845b8fe9ff1b93bf1e906cbcf93a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9604 10864 bytes

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