Malicious PDF — malware analysis report

Static analysis result for SHA-256 08baa13f4e04b1ef…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 14:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4083f424ec041870c434d915d83e13a8 SHA-1: b4ec46a7c4b6fe407f0fe8e8886bb009433a8a10 SHA-256: 08baa13f4e04b1efa13cc938b8d380d5a4fac6b0ecafac145262f7ce58b2f158
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One of these links, https://ttraff.com/pify?keyword=source+sdk+2013+single+player, is identified as a known malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely leading to malware download or phishing pages.

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/pify?keyword=source+sdk+2013+single+player
    • http://files.greateventsrecording.com/uploads/1/3/1/3/131381640/lopanidekiranizewowa.pdf
    • http://wamule.lydiaannflymasters.com/uploads/1/3/0/8/130814423/60996.pdf
    • http://ketumaloz.gods-acres.com/uploads/1/3/1/4/131452883/vipasitesese.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0463/0845/8661/files/border_design_png_format.pdf
    • https://cdn.shopify.com/s/files/1/0437/3636/7265/files/dudagutub.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/catalizador_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/email_marketing_hubspot.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/pewogubuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/lithic_analysis_odell.pdf
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/89970375918.pdf
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/23209611571.pdf
    • https://cdn.shopify.com/s/files/1/0428/3547/6646/files/check_font_used_in.pdf
    • https://cdn.shopify.com/s/files/1/0440/9029/4437/files/myasthenia_gravis_medications_to_avoid.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_off000069a2.bin
d35e7f897dd9300752a4fd4e0b9092f79b86e8ec51bc1f49fc08e29121aa16d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x69A2 6000 bytes
font_01_sfnt_off00007e1d.bin
d6ce214f2f6f850da6007dc79326e3aefabd734864bfd88bec53f9b3e3d2e4a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1D 12492 bytes