Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b052312c014ddbd…

MALICIOUS

PDF

26.4 KB Created: 2020-10-04 04:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 115eb2134715650facf4d6e4de7d17d0 SHA-1: f6e647f9fa014b0fc7e0b80fe5ee7bb78eefaf8d SHA-256: 2b052312c014ddbd2ebeb912461bf4fb861a1564da61a605447b5a0afc1d08a6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links designed to appear as search engine results for specific manuals, leading to a malicious redirector. This technique is often used for SEO poisoning to drive traffic to malicious sites. The ML classifier strongly indicated maliciousness, and the presence of numerous external links supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://ggtraff.ru/strik?keyword=instruction+manual+for+sears+kenmore+sewing+machine+model+158 In PDF document text
    • http://files.rideon365.com/uploads/1/3/0/7/130738679/xagomof.pdfIn PDF document text
    • http://files.hooperrealty.net/uploads/1/3/0/8/130815437/suvuxusabute.pdfIn PDF document text
    • http://files.wjbands.org/uploads/1/3/1/4/131437254/e6c5a.pdfIn PDF document text
    • http://files.rachelsvineyardtucson.org/uploads/1/3/1/3/131383664/0714680.pdfIn PDF document text
    • http://dutopoji.lighane.com/uploads/1/3/1/4/131437100/2193719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1243/7662/files/35963489002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4385/5777/files/mortal_kombat_karnage_full_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5489/5782/files/why_i_am_not_a_christian_bertrand_russell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7094/6456/files/wow_classic_stats_for_rogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9870/4539/files/wizajonavumifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0377/5640/files/how_long_do_rats_live_white.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3984/1695/files/vetobibujomupedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/44348066772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2232/2328/files/35547922969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5912/5153/files/levolopogegotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2069/9813/files/craftsman_drill_battery_charger.pdfIn PDF document text

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