Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ab78b322e6aeb4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-05 01:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bc35852eca8b77f05421ddc47b75c23 SHA-1: af36fe13036227812ee3a4a5c33afdb43b3bac26 SHA-256: 93ab78b322e6aeb4318f3c116f3df6e7e9583b641768fff2d9007281aee2c714
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=autosomes+and+sex+chromosomes+pdf, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to 'autosomes and sex chromosomes pdf' and appears to be generated by wkhtmltopdf, suggesting a lure document. The presence of numerous Shopify-hosted PDF links indicates a link farm strategy to improve search engine ranking and distribute malicious links.

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=autosomes+and+sex+chromosomes+pdf
    • http://files.nightsongpettingzoo.com/uploads/1/3/1/6/131606121/zegodikaxa.pdf
    • http://geruf.cherylsteventon.co.uk/uploads/1/3/0/8/130874457/raxukolidovefepixi.pdf
    • http://files.k9perfectiontraining.com/uploads/1/3/1/4/131455158/wuderaninure.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/dilekotufoxuxewu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/ad_d_2e_players_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/1419452958.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5708/files/sumunezowofopunof.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/mixosen.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/wekagerukogevituwixizil.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/conceptual_physics_11th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/weather_lewiston_me.pdf
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/46616805829.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6140/files/73793931136.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/varitozifezatabum.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_off00006748.bin
30ffc3f59c5c0858ac7ed8979fe6a0414b1bb6d00d4e8096219222b4817cf69e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6748 5420 bytes
font_01_sfnt_off00007990.bin
145b5f713e00300597abe20214f5d8247f71403fd0fe6060e20bd21b1a75e0aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7990 10240 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.