Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff03dbb25c00a44…

MALICIOUS

PDF

53.4 KB Created: 2020-07-28 14:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dafd5d4ace9aa6340acc1b866b0db36 SHA-1: e982972ac69ae4646fbf88a8f01bee1a7de7c297 SHA-256: eff03dbb25c00a4445a871d462465e1ae33375dd90b97731c5cbbf4a57bede6a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The ML classifier strongly indicates maliciousness. The document body appears to be obfuscated or corrupted, but the presence of the redirector URL and the link farm structure strongly suggest a phishing or malicious redirection attempt.

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=antenna+tv+guide+los+angeles
    • http://files.ashleyparsonsyoga.com/uploads/1/3/2/7/132740415/newixebomufobezofawe.pdf
    • http://files.shalomtuscaloosa.org/uploads/1/3/1/1/131163712/3031739.pdf
    • http://files.mooneward.com/uploads/1/3/1/3/131380849/xipusowajenupubobinu.pdf
    • http://files.burlingtontheatre.com/uploads/1/3/1/6/131637081/vulowowojajafeli.pdf
    • http://files.wsori.org/uploads/1/3/0/7/130776712/9878546.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/12420330063.pdf
    • https://cdn.shopify.com/s/files/1/0431/8137/5648/files/mejuraw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/sakakuvegatibikanafuwav.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/fixuxugeson.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/42301860321.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/69329409162.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/67671817472.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/wazowoxupezal.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/suwid.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/xunavarelejeponufaxiwana.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/pevam.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/
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/fixux

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724e.bin
a1e1aba23c6c622b54f84cfc7bd2e7539e752acc756c2fc3dc76fdad9dbf9a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 4828 bytes
font_01_sfnt_off000082c4.bin
ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C4 2656 bytes
font_02_sfnt_off00008dc3.bin
b5c6b6e0c9ada0bf1c6b02372d38a6194b0fc304f51b15768a03b7bd417def48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC3 3048 bytes
font_03_sfnt_off000099d4.bin
1f6d46fcf7bea98fc7881f71fa8d506e5a27e962b6c5445f9f0b6fd8a3cf331c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99D4 13768 bytes

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