Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e2974ff9994065…

MALICIOUS

PDF

57.4 KB Created: 2020-07-29 03:36:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1dd167e7beb65fe67228cd822e0c14e SHA-1: ae437909065031a132ac88e6e9426d231e53dc71 SHA-256: c7e2974ff9994065068fd9dc277ef868e242efe85b8bd2604d86582f011105b2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to 'concave and convex mirror images pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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=concave+and+convex+mirror+images+pdf
    • http://files.orowater.net/uploads/1/3/0/9/130969499/jufirefa.pdf
    • http://files.mjshilltopfarm.ca/uploads/1/3/1/0/131070001/4116158.pdf
    • http://files.gonzalescountyfarmbureau.org/uploads/1/3/1/4/131437438/metizalipibi-magujipo-jifekub.pdf
    • http://files.gonzalescountyfarmbureau.org/uploads/1/3/1/4/1314
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/nesozezobademumavujokunin.pdf
    • https://cdn.shopify.com/s/files/1/0437/1179/1253/files/63041710932.pdf
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/50292973202.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tujekozovazufurujujazer.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/torupinoxewav.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/mowejomilizatedizijumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/43773483891.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/47822133174.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/31726624767.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/59286910844.pdf
    • https://cdn.shopify.com/s/files/1/0433/2086/9019/files/xatowisemofunowedot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000854b.bin
9745045e58039c80fce95b86c52ff3a1ee33ce7a3c2d98674313d0290b85cf48
pdf-font-stream PDF embedded font (sfnt) at offset 0x854B 5304 bytes
font_01_sfnt_off0000973d.bin
569361bb07c88313e1e5a92f3a877c617bc37dc8d2fbd9ce947d5d522129dca5
pdf-font-stream PDF embedded font (sfnt) at offset 0x973D 13984 bytes
font_02_sfnt_off0000c38d.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC38D 16036 bytes