Malicious PDF — malware analysis report

Static analysis result for SHA-256 61787f3ff3ba6ce5…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 01:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be60ca3ffd6be36fce7e85ab6fa2be5b SHA-1: 6dacd28f69bf29734dd1cb865f9e70a977b687b2 SHA-256: 61787f3ff3ba6ce53ddff04e9b82c8c50c2cd960a62cf6ee96546ee3047368e8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary links directs to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains keywords related to a sewing machine manual, indicating a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=brother+sewing+machine+jx2517+manual
    • http://files.stlouisfitnesstraining.com/uploads/1/3/1/3/131383544/224805.pdf
    • http://files.redrocksins.com/uploads/1/3/1/3/131380995/5239769.pdf
    • http://files.michellekhuu.com/uploads/1/3/1/3/131398406/3309445.pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4655/8113/files/xisilakobijukud.pdf
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/bitdefender_antivirus_plus_2019_crack_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/1862/3896/files/12236730561.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejolezogumulugadajo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/82223584676.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/alexia_clark_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/29619903326.pdf
    • https://cdn.shopify.com/s/files/1/0439/4926/0968/files/14735074768.pdf
    • https://cdn.shopify.com/s/files/1/0437/3286/1079/files/freeshop_no_title_keys_found.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/ae_9000_multifunction_meter_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/yellowstone_winter_guided_tours.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/79067747995.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000603a.bin
b0b9146202db3475fc661df8edc1b40d5ee8e8f694ea754705de1691a4131a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 5884 bytes
font_01_sfnt_off00007442.bin
66822ad0bb31ea51f65048d5906d3266dc5ad334afcad41735a168d8f44d359e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7442 10424 bytes

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