Malicious PDF — malware analysis report

Static analysis result for SHA-256 924d57e9ce235f23…

MALICIOUS

PDF

45.5 KB Created: 2020-08-18 18:59:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c04c3632a44daa658a4ef8585707868e SHA-1: ef908106fee9e3a60d58c872bb3cd0079d5a9521 SHA-256: 924d57e9ce235f23c35bfaf8bac4db28b084850b7121344d4d45822e53b4a563
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector, pointing to `ttraff.com`. It also exhibits a PDF link farm, with many links hosted on `cdn.shopify.com` and one on `rockingcleatherandboutique.com`. The document body, though heavily obfuscated, contains the text 'Environmental impact report cost' and a URL that matches the redirector found in the heuristics. The presence of urgency language further supports a phishing or social engineering attack pattern. No scripts were extracted, limiting the analysis of the payload.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=environmental+impact+report+cost
    • http://files.rockingcleatherandboutique.com/uploads/1/3/1/3/131383510/7375545.pdf
    • https://cdn.shopify.com/s/files/1/0431/8461/9681/files/54122174476.pdf
    • https://cdn.shopify.com/s/files/1/0433/3466/4347/files/larananiwonezasagopakeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/33298472391.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/applications_of_differentiation_and_integration.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/80s_drum_samples.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/10043881574.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/nitriding_process.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/38332943313.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_off00007490.bin
62a57c955190fe88c8cd09f6ba6052a1d236e993b410cdd2f87fa0b8c7a71c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7490 5096 bytes
font_01_sfnt_off000085cc.bin
2a31e6e8f82503dbdc8368f8fc763c1b3db46f51bda4885c24aad018d7933fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85CC 10352 bytes

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