Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8e135612047d4d…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 00:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6f73eb8ed792a04795993a15911476b SHA-1: 5f3afdb7056eb44f101ec159c36ae1b1dbe1afe1 SHA-256: 1c8e135612047d4d23f99ede858f1120cc2566cec036fd4cb3fbd85d7fc877bb
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with a critical heuristic firing for a link farm and a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=fable+temple+of+avo, which likely serves as a gateway to further malicious content. The document body is heavily obfuscated, but the presence of numerous links, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute further payloads.

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.com/pify?keyword=fable+temple+of+avo
    • http://files.bmcgivern.com/uploads/1/3/0/9/130969742/4468261.pdf
    • http://files.ritchandyvette.com/uploads/1/3/0/8/130874031/e7786465.pdf
    • http://nunan.jamesoakleyentertainment.com/uploads/1/3/1/4/131454024/fowema-pusitifob.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/risudekegasojuvukuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/44904821931.pdf
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/rexaseleduvisirilonej.pdf
    • https://cdn.shopify.com/s/files/1/0433/6661/3141/files/72584825371.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/lewapurolefiluzafazar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0448/files/58290850044.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4758/files/43005950488.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/3083379374.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6444/files/josetojanepegaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/nokumozijupizisini.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/38563937309.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/lisa_kleypas_married_by_morning.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_off00006bf1.bin
bcf8a9ad8b21cb4b292e67d3dee7c4670ac4c906346cf40a13069412686e6874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 4928 bytes
font_01_sfnt_off00007cb3.bin
4e89bf0490190acd84320c3e4aa03554b5b7995d1e4197af9cd45b41479b7c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB3 10504 bytes

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