Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ba5481550c2b64…

MALICIOUS

PDF

61.7 KB Created: 2020-08-08 00:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90cc73a36c7fdde81e954fb00edc948b SHA-1: 5223d437154de479fc4b1388a74509267c5dc8bd SHA-256: 76ba5481550c2b646e62ba14d7fe6fd93af74b5c738625f5e57ede469e8dc934
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one prominently pointing to a known malicious redirector. The document body, though partially garbled, includes the URL 'https://ttraff.com/pify?keyword=simon+sinek+find+your+why+pdf', suggesting a lure to external malicious content. The presence of a large number of external PDF links further indicates a link farm or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=simon+sinek+find+your+why+pdf
    • http://files.northvicgps.com/uploads/1/3/1/4/131437508/4d1bce.pdf
    • http://files.mymslifestyle.com/uploads/1/3/2/3/132303270/panapepubomosi-ziwagedunetivuk-wisijudomimuv.pdf
    • http://pifux.keephpbeautiful.org/uploads/1/3/2/6/132681670/177b1c7ff74ff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/8225/8334/files/baduralijobekasowuxetedit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdf
    • https://cdn.shopify.com/s/files/1/0432/3531/1775/files/pemifisevemaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/kusovagizudijijolewefa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/celebrity_endorsement_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/302759344.pdf
    • https://cdn.shopify.com/s/files/1/0447/9827/9841/files/bed_bath_and_beyond_mission_statement.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/thyristor_controlled_rectifier.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/allen_bradley_powerflex_40_manual_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/3066/5637/files/luzagowarononowoba.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/pupiposamokewajudarebozi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5899/5095/files/abecedario_y_numeros_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0433/5871/6054/files/59861840270.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000897c.bin
77769ddb66f1f569e1f225f56e96586434f0e92948c522b1b6c42e45ba9c06e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x897C 2884 bytes
font_01_sfnt_off000093c3.bin
e30ddce7170075dbdca00650ae4ca705acec007a64baa343e1afb56e61b717d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C3 5400 bytes
font_02_sfnt_off0000a617.bin
4db7d05abf6697afccdfd0f202e552dec3e224b7501d695574231a59be6f4440		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA617 13368 bytes
font_03_sfnt_off0000d0bd.bin
4bf7462e787791ee30cced4e4a0065977ba460b587ec5e4d0bf31a1282398818		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BD 16416 bytes

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