Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce26f2d205c3732…

MALICIOUS

PDF

41.3 KB Created: 2020-08-03 20:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48f4066f9386a5aaec0d588bec5b1c9b SHA-1: 3f5c0acb8c97d3dbf376a6dfc85bc15edd2fe6d2 SHA-256: 2ce26f2d205c3732df0dcb374e743e8888df3a3f608b2f0bdfd7769a02432fd0
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which point to redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cecelia+ahern+a+place+called+here+pdf. While no scripts were extracted, the heuristic firings strongly suggest a link farm or redirector attack pattern designed to lead users to malicious content. The document body contains garbled text and embedded URLs, further supporting this conclusion.

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=cecelia+ahern+a+place+called+here+pdf
    • http://files.perennialchildcare.com/uploads/1/3/0/8/130814601/jolodiburaf_ruriduwaja.pdf
    • http://files.shannonkiernanlmt.com/uploads/1/3/0/9/130969312/gakogigug.pdf
    • http://files.woutervanheesphotography.com/uploads/1/3/1/3/131379382/pozibemugerila-fuvoxewuzor-tuwiresedotip.pdf
    • http://files.kfxfarms.com/uploads/1/3/1/3/131379443/womaka_lebapenojeni_kovulirelobe.pdf
    • http://files.vintageglamper.com/uploads/1/3/0/9/130969986/pixonuxoguxolid.pdf
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/97972942532.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/bolotuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/16926553258.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pagujusevidunevaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/0586/2307/files/losabejetegija.pdf
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/xorupubuvapoxojagewivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/zutezofonikifuzexab.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/20637586336.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/nevikoluguzawedopavegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/51518807748.pdf
    • https://cdn.shopify.com/s/files/1/0435/3091/1899/files/anatomy_for_sculptors_online.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_off00006531.bin
0ba50470c2ad882e37df0afa6e15d09e962817d0ee6f590f9b25b8bd24b6fd22
pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 4968 bytes
font_01_sfnt_off00007611.bin
cbe29bf82e8d694ec4a77396c64a697244f0474358d29e50596ed6329dc61304
pdf-font-stream PDF embedded font (sfnt) at offset 0x7611 9956 bytes