Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d52d0028198e18…

MALICIOUS

PDF

58.8 KB Created: 2020-08-01 00:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0ef39300994354f888d37b4cdcb3e95 SHA-1: 599cacf102f46e36b1f5cbf0327e9bdaf03b5b8d SHA-256: f2d52d0028198e18452e8a314d1726ac52c5c45e4222fb7e47705311e86c820b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to distribute further malware or conduct phishing. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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=holes+by+louis+sachar+pdf
    • http://files.taketime2breathe.com/uploads/1/3/1/4/131437756/60d1f817db8b868.pdf
    • http://files.rankincreekcustomcycles.com/uploads/1/3/1/4/131407469/1246868.pdf
    • http://files.bibs2bags.com/uploads/1/3/0/8/130814680/7236707.pdf
    • http://files.conversazioniconilventre.com/uploads/1/3/1/4/131406258/laxibinadali.pdf
    • http://files.pro-mx.com/uploads/1/3/1/4/131482962/lepezo_vositotuvil.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/wonelofulisipejugilato.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2311/files/zimagi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/56455754377.pdf
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/66134278482.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vunususojorimit.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/11782078755.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/34627443037.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/mabulorilaroxepuno.pdf
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/38424669543.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a865.bin
9cdd1517081576a4ed66797efe9d74403c08f05836863e32e138295386cd9597
pdf-font-stream PDF embedded font (sfnt) at offset 0xA865 5444 bytes
font_01_sfnt_off0000bae5.bin
624b489b6d09aaa93db017559e4a1d32a1adc12a2c0502b20f61c55baf71bd98
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE5 10376 bytes