Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e63761743a1175d…

MALICIOUS

PDF

68.3 KB Created: 2020-08-06 02:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 874ca1a3efc8a74b0d81dd46cb73b417 SHA-1: e5d491860624881ad715c8521273f08f08aaf5b8 SHA-256: 7e63761743a1175d36cfc91ba50eb48d965bfb331e292fd97b52a96a8f2d62ad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com), indicating a phishing or SEO manipulation attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious redirector and a large number of embedded links suggests an attempt to drive traffic to malicious infrastructure, likely 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=beamforming+in+mimo+pdf In PDF document text
    • http://files.lisaxing.com/uploads/1/3/0/8/130874102/pujofoziz-kokamimopuba.pdfIn PDF document text
    • http://files.signaturewoodworkinginc.com/uploads/1/3/1/3/131379301/bitaxesiwozit.pdfIn PDF document text
    • http://files.bretcharmanphotography.com/uploads/1/3/1/0/131069899/9690994f441634.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/1/0437/1811/5480/files/kijuvupijudupazezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/71578712462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/gapps_cm_13.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/96084602581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ximulomonarosaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/fuxabewedezovonokovipoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3850/6146/files/story_elements_anchor_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/lesepitoboximolovodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/buzopalezegunomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/git_pull_from_master.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/xidamexesobitunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/rafozixidazanimigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/topijunitazeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9965/9176/files/temapero.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_off00009de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE9 8048 bytes
SHA-256: 68803ce9cbd2b1b28263e3576f090ec54ef06e21e68f8ff065add50cb97b0f5c
font_01_sfnt_off0000b916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB916 5200 bytes
SHA-256: c09704098da3b9a3f81c26bfa0065ae44d1dadfbfe5ac778d1c6ae058c1a6ab4
font_02_sfnt_off0000cab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB7 10532 bytes
SHA-256: a1f94263deac891f13a4c909e088f0dab53d6e517e650817b93308ef654645e1
font_03_sfnt_off0000ef07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF07 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c