Malicious PDF — malware analysis report

Static analysis result for SHA-256 f206f101de95962b…

MALICIOUS

PDF

42.9 KB Created: 2020-08-08 17:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35b3f3493099ee2e6cac042a44fc0200 SHA-1: 384090002f1a258be0f057364c923097561361e9 SHA-256: f206f101de95962b7d2d1f3c0a984d0684ee2829a3383a6dc308110bf9e2b0fb
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'wedding budget sheet pdf'. The primary malicious link, https://ttraff.ru/pify?keyword=wedding+budget+sheet+pdf, is designed to redirect users to potentially harmful content. The presence of numerous other Shopify links suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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.ru/pify?keyword=wedding+budget+sheet+pdf
    • http://files.ifixcaravans.com/uploads/1/3/0/8/130813764/pifalavo-vetewepiz-fetop.pdf
    • http://files.steam-era.com/uploads/1/3/0/7/130740586/nidamabebezogore.pdf
    • http://files.thesassyheiferboutiquellc.com/uploads/1/3/1/3/131379510/vadisifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/39946600974.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6619/files/15672178100.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4536/files/kuletozolivotazez.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/mukexonobevaxuvidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9175/files/weight_for_age_z_score.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/tuvomagunezawovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/bapitajupeliwarokurujodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/wikofixedavilorova.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/66025844154.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/73493593627.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/wivegugalonafapoza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.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_off00006a57.bin
3fe07ed8ebfa5ec3fad88f95865fee3ca031e32b237ba2ee6b580dfe4a48ec65
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A57 5116 bytes
font_01_sfnt_off00007bd2.bin
7f1bf45f01de9a73caa28a8a13ae5c4ad9daac4a27abfebeee536a89d0b0d24f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD2 10240 bytes