Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f27631911a50132…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 07:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd35f21f9602040716e3264180149b5e SHA-1: 6bbaac1064cb47cee76f2073d978835c6db88825 SHA-256: 7f27631911a5013277db6e0ea3bb24519e8c31e498686fa7f88d94a2875fd15e
194 Risk Score

Malware Insights

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

The PDF file contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and redirector infrastructure. The primary lure appears to be '3d wallpapers for laptop free', which redirects to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or malicious redirection attempt, likely initiated via a spearphishing attachment.

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.ru/pify?keyword=3d+wallpapers+for+laptop+free In PDF document text
    • http://tagozo.gertybrown.co.nz/uploads/1/3/2/8/132814930/bb033a.pdfIn PDF document text
    • http://files.thehivepto.com/uploads/1/3/0/7/130775516/6772745.pdfIn PDF document text
    • http://gogirisu.joankramerprofiling.com/uploads/1/3/1/3/131383708/7144299.pdfIn PDF document text
    • http://files.mashawmcguinnis.com/uploads/1/3/1/0/131069906/vaxiti.pdfIn PDF document text
    • http://files.masoncitychristian.com/uploads/1/3/0/7/130740391/xigisupokijuwu.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/1/0433/9531/7918/files/gogaguzewesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1098/0000/files/frp_bypass_apk_with_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0827/files/434594861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4380/7654/files/tumaczenie_zda_angielski_gimnazjum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/41690709555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/penanesugebepuleter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/6282/3834/files/pp1_curriculum_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/nejibomimawotitimilusidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8700/2790/files/xowazasabakelanuxomafakif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/19928131758.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7B 5196 bytes
SHA-256: d66a1333efdd1da2fdf704e9cbfee3cab025971c29c60567a086dd4b4ed5ea35
font_01_sfnt_off00006f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F43 10296 bytes
SHA-256: c904d4b86a85061aa8758a9b7bc562aec882511be02235112ced2290e004d54f

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