Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a2e4230a7999c8…

MALICIOUS

PDF

49.3 KB Created: 2020-08-08 01:34:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7077786b5e305c5cca18e5dfb13a6d64 SHA-1: be0d3563850d4bf9efa3539dc673ee1629734d6a SHA-256: 20a2e4230a7999c824e897096cc6f146ed10cd29a3497044fd683a21c229d1ae
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=edit+text+in+pdf+file+free+download`. This URL is part of a link farm designed to manipulate search engine results. The document body, though partially corrupted, contains text related to editing PDFs and the redirector URL, suggesting a social engineering lure. The file also contains numerous other embedded links to external PDFs, many hosted on Shopify, indicating a broader link farm strategy.

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/pify?keyword=edit+text+in+pdf+file+free+download
    • http://files.fitzpatrickecologicalconsulting.com/uploads/1/3/1/1/131163635/09ac9c.pdf
    • http://mosuvaru.thestampprofessor.com/uploads/1/3/1/6/131637240/4545802.pdf
    • http://files.elenbnews.com/uploads/1/3/1/8/131856247/231c0.pdf
    • http://files.craigweflen.com/uploads/1/3/2/7/132740511/memizerim-kuzatek-sesixoti.pdf
    • https://cdn.shopify.com/s/files/1/0428/8600/4899/files/rodikefibotiweroligexa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/traer_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/nelafeloviputasidajunogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/joguxesexakigani.pdf
    • https://cdn.shopify.com/s/files/1/0433/2699/6633/files/49749413494.pdf
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/rachel_steele_favorite_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/bright_futures_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/guwozoninodunidaxemu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/gedeguwividar.pdf
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/d_d_4e_monster_manual.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006340.bin
d727165effc354ec7bb04459e80e91d53ac7d5d91f38687003da456a02004145
pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 4764 bytes
font_01_sfnt_off00007387.bin
531e3b3a073856943932a5036251c86a3d15a410f37d436aff222b84161da5bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 9708 bytes
font_02_sfnt_off000094f7.bin
10572f3a10760712fbb8352e098d229fd21f48763f52fb6fd9385479015ceb58
pdf-font-stream PDF embedded font (sfnt) at offset 0x94F7 16060 bytes
font_03_sfnt_off0000a98c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA98C 4324 bytes