Malicious PDF — malware analysis report

Static analysis result for SHA-256 84067cc7ba562efb…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 15:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a27cee770fa5cbf0c38e684b2b1e1cd SHA-1: 6d1273abb08808a1dc948646555f1a0391dbd1ec SHA-256: 84067cc7ba562efb8907a9baf2037df9d401ec4d149669effc51ffb13a29166d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a malicious redirector link that is disguised as a free business template. The link leads to 'ttraff.com', which is known malicious infrastructure. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, likely for SEO manipulation or to host further malicious content. The presence of parser-evasion techniques suggests an attempt to bypass security controls.

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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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.com/pify?keyword=free+business+powerpoint+templates+with+animation
    • http://files.israquakids.com/uploads/1/3/1/4/131406663/wazoniwe.pdf
    • http://files.techreviewed.xyz/uploads/1/3/1/3/131380759/0d5b2ba4f6.pdf
    • http://files.sparadise.ca/uploads/1/3/1/4/131483138/2695132.pdf
    • https://cdn.shopify.com/s/files/1/0438/6013/2005/files/bhagavad_gita_chapter_18.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/selfie_bebo_odia_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/action_plan_template_deped.pdf
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/linguistic_typology_morphology_and_syntax.pdf
    • https://cdn.shopify.com/s/files/1/0435/6620/3029/files/70525399597.pdf
    • https://cdn.shopify.com/s/files/1/0432/2574/3515/files/50258886723.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/xesiteraka.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/46920973710.pdf
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/vudarokuxofefave.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/16130196046.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17418425376.pdf
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/71128491210.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006559.bin
15fa91a85e154a8e509971b537da23c01b5b3009a49a2ab3dc1ce0ddf26c0ec4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6559 5244 bytes
font_01_sfnt_off00007705.bin
b7c2ca2c5855d5618e8599dbeee06166ff2b3d42811cb2459aa21a68d8a4f312
pdf-font-stream PDF embedded font (sfnt) at offset 0x7705 9932 bytes