Malicious PDF — malware analysis report

Static analysis result for SHA-256 031b472949d7c921…

MALICIOUS

PDF

46.1 KB Created: 2020-08-11 00:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8ac68c1f280d451b850f039ace2f87b SHA-1: 6063b6115c5677fdcb17fd0245af1f5ee674390f SHA-256: 031b472949d7c9211c1aef7f5cda98d68f87238e4e82f997af08fe9ad353e687
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with a critical heuristic firing indicating redirection to known malicious infrastructure via 'ttraff.com'. The document body and embedded links suggest an attempt to lure users with download-related keywords, likely leading to phishing or malware. The ML classifier strongly supports the malicious verdict.

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=airmen+group+y+book+pdf+download In PDF document text
    • http://files.turkey-health-tourism.com/uploads/1/3/1/4/131453934/tiwezojida.pdfIn PDF document text
    • http://files.teaandtango.com/uploads/1/3/0/7/130738970/xaputow.pdfIn PDF document text
    • http://depaluse.zestcleanfloors.com/uploads/1/3/1/1/131164250/80d7af.pdfIn PDF document text
    • http://files.christaniehunterart.com/uploads/1/3/0/7/130739081/1138638.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/luponib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/sirasulejusewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/javascript_tutorials_point_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/5325892236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6701/3280/files/7_natural_wonders_of_the_world.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/31804646794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/57673862010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/rolirejejes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/artificiality_and_enlightenment_from_sociobiology_to_biosociality.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1053/1233/files/xabef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/28046195002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4611/6248/files/25167930751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1872/2207/files/samotirirewuganapisig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 5572 bytes
SHA-256: 9f0935b7f591ba90dd7f35fd9ebd536d0c97f91923392930d2c962268e6c5e9c
font_01_sfnt_off00007b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8A 10024 bytes
SHA-256: acec46f2970589e20c5004aa546c395325529691256f83e9b4ec04705d743f92
font_02_sfnt_off00009e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1D 2832 bytes
SHA-256: d7a1248cabf161ff78a072bd924b98f1b4e551660f4e151c9433689786990c0c

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