Malicious PDF — malware analysis report

Static analysis result for SHA-256 a265915fd5f1c103…

MALICIOUS

PDF

44.3 KB Created: 2020-08-03 12:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ac2af17de87b4e65275b8091853e781 SHA-1: 60a85406e5451c203fba9a4973f905e528a3483b SHA-256: a265915fd5f1c10373dca8e72ab980a3d3657e2cfab3951f0d71bf599a637436
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.cc/pify?keyword=alveolitis+seca+y+humeda+pdf. This indicates the document is designed to lure users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.cc/pify?keyword=alveolitis+seca+y+humeda+pdf In PDF document text
    • http://files.mikearend.com/uploads/1/3/0/7/130776273/6c6853bed045.pdfIn PDF document text
    • http://files.grittyfaith.net/uploads/1/3/1/4/131438282/a7c37.pdfIn PDF document text
    • http://files.saintveronicaparish.com/uploads/1/3/2/6/132696171/juligijanirizud_kotiwum_jufosega_keberaf.pdfIn PDF document text
    • http://files.tlgconsultingvt.com/uploads/1/3/1/4/131438176/kapixisemapuxaxude.pdfIn PDF document text
    • http://navaf.juniorbearbooks.com/uploads/1/3/1/4/131453698/widiguze.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/1/0435/5486/5320/files/gezawepowinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/finosonewipavajiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3908/files/kenixikezapawame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8099/7269/files/jaralap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/science_olympiad_division_b_rules_manual_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/doctrine_of_the_holy_spirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/pimebekojosow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3822/6085/files/kenmore_elite_ice_maker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/lezopaxetefakugidozutige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/82483011388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/arraylist_remove_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/17757791632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/13664101632.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 7

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_off00006e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 5448 bytes
SHA-256: c050b089285b8e2c041c0f501b26c4e345cfd30f129405554efd281505a333cc
font_01_sfnt_off00008115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8115 10304 bytes
SHA-256: f4b0a94be624ff8e38cf46ac10b3f81f441c132583d645f3f9c62aef1be116c7

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