Malicious PDF — malware analysis report

Static analysis result for SHA-256 1437161e6a0bce85…

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 01:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 525504c49520374c7bf4250b1c84fd9f SHA-1: 9eaba745a91fb38128f5c494fa9adffa15e1cece SHA-256: 1437161e6a0bce85c79d2c180db33321ec7f42a9403a60816b63e6c50bbe2132
162 Risk Score

Malware Insights

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

This PDF document contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically 'https://ttraff.com/wix?keyword=android+10+motorola+x4'. The document body, though heavily obfuscated, contains similar URLs and text suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, further supports the link farm heuristic, indicating a potential SEO poisoning or spamming campaign. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
  • 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=android+10+motorola+x4
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0449/8289/4750/files/performance_appraisal_reaction_paper.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/tonobato.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/xp._apple._com_e2_80_9d.pdf
    • https://cdn.shopify.com/s/files/1/0431/5332/6242/files/xetupulagitikibotoz.pdf
    • https://static.usrfiles.com/ugd/0dd040_b1d2e42745f64805a99320d70e435f4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_38cd90dd58504d1fadfffde7be757e50.pdf
    • https://static.usrfiles.com/ugd/b50c55_496fffd1e20841919fcfead07de4cf14.pdf
    • https://static.usrfiles.com/ugd/96768c_07422541b6434377b07c559b44152160.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/mercury_optimax_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/rolopiwejibowegufumuxiv.pdf
    • https://cdn.shopify.com/s/files/1/0436/5457/8334/files/94620147199.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/metric_conversion_worksheet_math-_drills._com.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/54111900574.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_off00006efd.bin
1ac24fdd63801e581979006a9b276cc7f243bffa519f8fc7015c4711b58b7b79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFD 5132 bytes
font_01_sfnt_off00008065.bin
ee93516eadbf863f920dfdb4b184c2ca2fce7535e68af8925afeeca4e4e7e25e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8065 10584 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.