Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a54ab4ccfcc2b5…

MALICIOUS

PDF

63.1 KB Created: 2020-08-20 20:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dab64b1ce0dcd605a983fb13e856eb9 SHA-1: d1389265ef5254a2bf34af5d2e718bb55c2a0c65 SHA-256: 21a54ab4ccfcc2b583f6d7f55f01ca50857319d5e554a665d9d523122432b0fe
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL and a keyword suggesting a lure. The presence of numerous other PDF links, many pointing to benign Shopify domains, indicates a potential link farm or SEO manipulation tactic to increase visibility. No scripts were extracted, but the primary malicious activity appears to be redirecting users to harmful content.

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=cross+platform+games+android+ios
    • http://files.canningcomputerrepairs.com.au/uploads/1/3/2/6/132695719/penutoxanego_biwipu_zafumipojukevem_vililipegul.pdf
    • http://gepid.wylieeastsoftball.com/uploads/1/3/1/4/131438437/85411bac0bb.pdf
    • http://files.trainingaid.co.uk/uploads/1/3/0/7/130776276/vimesi_lobewagomuguwa_gubejizepul_rederijutewixab.pdf
    • http://sabijafi.alittlepeaceayurveda.com/uploads/1/3/0/7/130775388/4741573.pdf
    • http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/ford_tractor_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/14732757955.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/27284160731.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/24149954007.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15906675896.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/55383610493.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/essential_organic_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0447/1426/2682/files/86109256203.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/nakopixojaxoveduvasera.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0469/files/seirawan_winning_chess_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/5092647604.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/28874400613.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/ravi_zacharias_sermons.pdf
    • https://cdn.shopify.com/s/files/1/0430/5420/3031/files/abcam_western_blot_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/12217094902.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_off0000b201.bin
8a6d7f4c3146b4080a0d61a263ce5abe89acfaf12580658171bbc6913c7b054e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB201 5268 bytes
font_01_sfnt_off0000c3d3.bin
bdbce71dbbcb5f5f07a3c90a7437f2b3ea1e8426916c446b10989f24b33a9d7c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D3 13600 bytes