Malicious PDF — malware analysis report

Static analysis result for SHA-256 2907fc681e857548…

MALICIOUS

PDF

38.2 KB Created: 2020-08-19 08:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc5cb58c663a73efffa3b108cc38711f SHA-1: 7c7e57ff33d8cb2e47b5100a276e914ccdd23513 SHA-256: 2907fc681e857548767275e9f24d78d4e8da4722fd2acf1e29a360c7bce2a422
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, embedding numerous external links, many of which point to benign Shopify domains, likely to improve search engine ranking and mask the malicious intent. No scripts were extracted from this sample.

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.cc/pify?keyword=dream+catcher+colouring+sheets
    • http://files.sagebrush-art.com/uploads/1/3/0/8/130815009/tuxoze-zosexerunizozu.pdf
    • http://files.meghanercolanolcsw.com/uploads/1/3/0/8/130874205/pubenuwemoxe_tavadaluki_xiwesif.pdf
    • http://files.wkelearning.com/uploads/1/3/1/4/131407102/bca0c34e.pdf
    • https://cdn.shopify.com/s/files/1/0437/0631/9001/files/allahabad_high_court_aro_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0434/8349/6600/files/82117755221.pdf
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/la_motivation_des_actes_administratifs.pdf
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/tixenokoxetajunak.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/geputukugevixegoxap.pdf
    • https://cdn.shopify.com/s/files/1/0430/4879/6309/files/jogim.pdf
    • https://cdn.shopify.com/s/files/1/0430/5682/4471/files/mejoxak.pdf
    • https://cdn.shopify.com/s/files/1/0438/3762/0381/files/75194247013.pdf
    • https://cdn.shopify.com/s/files/1/0428/7302/8775/files/85553183719.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/small_church_building_plans.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7879/files/yakuza_0_side_stabilizer_2._0.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/85110692306.pdf
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/ceh_v10_certified_ethical_hacker_version_9_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/15142783132.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b2d.bin
9711ed1c5b2b44e974e800f9f9a99f74567967077b341dea82ea4d9db3693449
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B2D 5092 bytes
font_01_sfnt_off00005c53.bin
7ec4fab75cf8e2ae3ba432a7c454df6bf3251db7be50124f0c5242977f60e7c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C53 9728 bytes
font_02_sfnt_off00007dad.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAD 4324 bytes