Malicious PDF — malware analysis report

Static analysis result for SHA-256 74088b70ef3c1e6c…

MALICIOUS

PDF

48.4 KB Created: 2020-08-07 07:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bdcc26c1e3000a578eb9c55c03d7c78 SHA-1: e0c3db442d662ce8e4eb33c8f6b3bf2c44b4fbf9 SHA-256: 74088b70ef3c1e6c45856f4c8f0455d488c73d0734f009667840c4653ca49912
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to a known malicious domain, likely as part of a phishing or scam campaign. The document body and heuristics indicate an attempt to disguise the malicious link as a legitimate download. No scripts were extracted, but the presence of embedded URLs and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic strongly suggest a malicious intent to redirect users to harmful content.

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=cnc+machine+pdf+file+download
    • http://files.whatnowedtech.com/uploads/1/3/1/4/131407164/09059ff.pdf
    • http://files.gordonoyer.com/uploads/1/3/1/4/131406741/2213793.pdf
    • http://fujax.liveplayband.com/uploads/1/3/0/9/130969592/dixesakorokuvuk-sufuvujara.pdf
    • http://files.southcallawayfootball.com/uploads/1/3/0/8/130814226/d33ebe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/54269352762.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/shrek_3_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/nilijadedozufizemuwabapot.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/venavuninulepolumozedel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/lojuwilik.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/50_shades_grey.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/furomakokosodulogip.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/zigaxogifazimorisif.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/calendario_serie_a_19_20.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/dizesaledutufila.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5335/files/xaromosunifegaf.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_off00007c38.bin
73d6a5304490652d8b52d2aba8a4966f5dbae818dfb1b2ed617b87f70bea18ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C38 5120 bytes
font_01_sfnt_off00008d92.bin
12456b90e18a59a49dbebc5c54c62b68d618a3346b90ea1569ca1f35f8741188
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D92 12084 bytes