Malicious PDF — malware analysis report

Static analysis result for SHA-256 38744f756c0650b9…

MALICIOUS

PDF

49.2 KB Created: 2020-07-17 04:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba2b71fcebaadb92279d329dbce7ca2b SHA-1: 13b0583966e9a0643f3dd252e8e131594767f480 SHA-256: 38744f756c0650b92487346f26f5aea9a6833410f52af759d45aee354e818199
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary link, "https://ttraff.ru/wb?keyword=weight%20watchers%20points%20list%20south%20africa%20pdf", is flagged as a malicious redirector. The document's content and structure suggest a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wb?keyword=weight%20watchers%20points%20list%20south%20africa%20pdf
    • http://files.oshkoshcarpetcleaning.com/uploads/1/3/1/0/131070527/didovatifozuba.pdf
    • http://files.freshhawaiilei.com/uploads/1/3/1/4/131406781/8273749.pdf
    • http://files.traditionsandrecipes.com/uploads/1/3/1/4/131437779/21f4c2b8.pdf
    • http://files.practicepraxis.org/uploads/1/3/2/6/132695682/vabegiwagerewari.pdf
    • http://files.queensonpurpose.com/uploads/1/3/1/4/131438423/2529431.pdf
    • http://files.queen
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/suzefigizotegizosuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/jowifatufolikatasox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuvinotagug.pdf
    • https://julesejaw.files.wordpress.com/2020/06/25285179675.pdf
    • https://sejidinaduk.files.wordpress.com/2020/06/rurozepivek.pdf
    • https://zimegeterov280979799.files.wordpress.com/2020/06/juzesedorudupu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/kalikebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vexib.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/zusisimadi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/fibeze.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/dotiwafurezivasepi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/supivijurepedenokixesuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/zaxitag.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/kusejulasamedotupol.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_off00008275.bin
a878eb7d6506947e2e1a671833445756d3ae94df14dccd0a00f683265b9895a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8275 5404 bytes
font_01_sfnt_off000094e9.bin
2eaa40ec74cfc8e914de6ac3cbabdaf1aa481503342b99009022b88c0a00ddff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94E9 10088 bytes

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