Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c35a0c41b6c488…

MALICIOUS

PDF

54.4 KB Created: 2020-08-10 20:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2475bcd9d572af7f6328437f338f3d6 SHA-1: 47c013f6b27ceb424d3f777012a6ad1026aed425 SHA-256: 42c35a0c41b6c48868255347bec1e4ce15b036db180a01faecd62dc726ca442e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with a primary redirector identified as `https://ttraff.com/pify?keyword=oracle+administration+workshop+2+pdf`. This redirector is associated with known malicious infrastructure and is used in SEO link farms to lure victims with deceptive content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=oracle+administration+workshop+2+pdf In PDF document text
    • http://files.washingtonactivities.com/uploads/1/3/0/9/130969206/8540930.pdfIn PDF document text
    • http://files.lasalleyouth.ca/uploads/1/3/1/4/131483143/2fa3df00a19b910.pdfIn PDF document text
    • http://begepe.cpasgc.com/uploads/1/3/0/7/130776485/jobijoka-wuwepak-warar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9420/4825/files/58757162074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0220/files/85413714894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2223/8374/files/jivasufivekokokipipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/i_m_yours_ukulele_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/costco_membership_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/adobe_trial_expired_reset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/44851826976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/sidobuwupalikaxutikax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/converter_para_word_i_love.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/47534192502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/xuwavojosevejulorepukum.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCB 5708 bytes
SHA-256: 2aedc713e7d86384c647fb37874dfd63d027ef7ff3d22ba76507e2ddd0e8b675
font_01_sfnt_off00008119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8119 1852 bytes
SHA-256: 7f1fc89d230b21cdf1c6da576e651cd8d1038c1fc087e797b2b55c3b3618ee60
font_02_sfnt_off000089ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EE 14192 bytes
SHA-256: ac0dec60021277e941578d17903ceacf2d56260421403cf5457172ecb62f5f9c
font_03_sfnt_off0000b6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6EA 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449