Malicious PDF — malware analysis report

Static analysis result for SHA-256 41638699af3414cb…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 15:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f9902fcf09511f5115045a496dfafa9 SHA-1: f6a4ced7b430d569f6b5a93f509e8a197084f8f7 SHA-256: 41638699af3414cb5113e79bc7e4a951278da02afd3402befb221eba65623ee4
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a lure to download further content or be redirected to a malicious site. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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=capacitor+bank+protection+pdf
    • http://files.jacquelineabelson.com/uploads/1/3/0/9/130969003/895d9e.pdf
    • http://files.theyogaconnectionstudio.com/uploads/1/3/0/7/130775735/7162043.pdf
    • http://files.christiacummings.com/uploads/1/3/1/8/131871602/maganomomijidomi.pdf
    • http://matelar.churchonthehillglenavon.com/uploads/1/3/2/7/132712358/fa3db4ee6ef8.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/gajavururusugewerejut.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/jojosorikaxupajat.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/51820504321.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
    • https://cdn.shopify.com/s/files/1/0438/8644/4699/files/7980358108.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/23897425784.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/lojamubetateretixadomejax.pdf
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/tofisut.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/basaxovovowokuguxezunane.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/milon.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7599/files/fukowaratuvonifotelep.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/az_101_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/79867383084.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_off00006380.bin
d72565a2d1cfc18ccc26ce6444f5526d071ee1e9c621f868d5c991dd265fca47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 5048 bytes
font_01_sfnt_off000074b1.bin
cd51454b9dfa8e796f32a762819ccdc8e9f340225b1f779e716009ea67dfee15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B1 9816 bytes

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