Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0780fab7192d1d6…

MALICIOUS

PDF

38.4 KB Created: 2020-08-06 08:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a31798b5718bf91cf913388ef940f295 SHA-1: 407865e9029a1b7d72baf0708acef509ab5ac853 SHA-256: f0780fab7192d1d6000703df04becf912e1ad3947b0423db5f11d34be8259bc3
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.com/pify?keyword=worthy+is+the+lamb+chords+key+of+a+pdf, which is likely used to direct the user to a malicious site. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to a compromised or malicious resource.

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=worthy+is+the+lamb+chords+key+of+a+pdf
    • http://files.scrappingfairy.net/uploads/1/3/0/7/130738914/kanotuxadinivuvas.pdf
    • http://files.hearforyourselfaudioreview.com/uploads/1/3/0/7/130776775/moselez.pdf
    • http://files.ldeleon.net/uploads/1/3/0/7/130775677/7c6b5.pdf
    • http://files.sacredheartsisters.org/uploads/1/3/0/8/130874599/82ba8ce33bb39.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/65095851672.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/download_animorphs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sibubemazalomasedexikeme.pdf
    • https://cdn.shopify.com/s/files/1/0432/6565/4939/files/sasekafawonobe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/tinyumbrella_java._lang._nullpointerexception_windows.pdf
    • https://cdn.shopify.com/s/files/1/0437/4256/0405/files/amos_fortune_free_man.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/57675233608.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/sojafarilixogopu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/8148633551.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_off00004ca0.bin
3ef7bc69e943c52cbf97a3e01ddce55f1ea65c4592a6b180c66670ac4828faa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA0 5712 bytes
font_01_sfnt_off00005ff6.bin
fe10a6ec57919956d2347ce0d130242107153a877036df0f105b0e253f5c3bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6 14432 bytes

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