Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b3b17cce05da8d…

MALICIOUS

PDF

64.2 KB Created: 2020-08-05 12:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75ad6ca1d2b6a9efd41412391ddf7f29 SHA-1: 3debf1313eed86371fae8da15f08ab55c397e2fd SHA-256: 26b3b17cce05da8d597c5c3ed4ff8e658a29ea811f8bbcebdabd69220e8a631c
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=consonant+and+vowel+chart+pdf'. The document body, though heavily obfuscated, contains this URL and other links to Shopify domains, suggesting a lure to download further content. The presence of multiple PDF links points towards a link farm strategy, likely to improve search engine ranking and attract victims.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=consonant+and+vowel+chart+pdf
    • http://files.pur-pro.com/uploads/1/3/0/7/130775350/teninir.pdf
    • http://files.castcoverstasmania.com/uploads/1/3/0/8/130813458/tixomefajafuter.pdf
    • http://files.mrsrosatosclass.com/uploads/1/3/2/6/132681901/notaxamonevelis.pdf
    • http://files.bennewitzdds.com/uploads/1/3/1/8/131872021/a39f0fd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/85880807055.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/fepulo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8463/4530/files/30628862076.pdf
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/44647948007.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/xezanonukaxezavorevu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/juvirojodeluvajesokikof.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3393/files/64154612312.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/zukoxanasu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/marketing_strategy_examples.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/bassam_tibi_islamism_and_islam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54686169254.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/sumarinoniti.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/xifusozenaruxedurepig.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6600/files/vumipilawotiraburesamobif.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_off0000a5fe.bin
2c23b569838313b67534bff3e7fde2dead84a922480d11fceff693c07d4ee74b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FE 5300 bytes
font_01_sfnt_off0000b80e.bin
c69746b9fc29bbbfe50dca72f74383c0ef95f1aa58885ef1f205e6887045ba5f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB80E 19588 bytes