Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6c39b6d32d1fc8…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 19:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9cbbd93b34e74ab309351136c360a70 SHA-1: effce833c88034e96d7556d5528762994787651a SHA-256: ab6c39b6d32d1fc877426d48618f63532172117b252fe86360bf18b903705e28
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, likely as part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text referencing 'free adobe indesign templates newsletter' and the malicious URL, suggesting a lure to a content-scamming website. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious 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.ru/pify?keyword=free+adobe+indesign+templates+newsletter
    • http://files.koeventing.com/uploads/1/3/1/3/131383314/vorutugaluzemumotu.pdf
    • http://files.craiglewismurals.com/uploads/1/3/1/3/131379395/3538830.pdf
    • https://cdn.shopify.com/s/files/1/0462/4842/7671/files/nenemetijugamedezofawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9997/8904/files/tibamilunuxirezajinepi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4080/files/84679105565.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/ruvugebedeporopubunos.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/tebisuzagaxexeburewud.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/lutobamibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2130/2946/files/davaxalisexogoraropuvux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/suzoxurazewodule.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/vudusi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/tuvaxejawukelufelabube.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/73849292416.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_off000065fa.bin
30b9f89ec2f7cd3e3b07ee923b77bcee4bd4a3006b79e90389260cc7f3a6fefd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FA 5468 bytes
font_01_sfnt_off00007886.bin
4d569542f97cd61cd5c1af1b596fc8c65998b5ddc3e3245cf698ee85d40f54e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7886 10068 bytes

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