Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1d39bb2195abad…

MALICIOUS

PDF

77.5 KB Created: 2020-11-23 08:36:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b87afd2bd8fa83c3acaf9353e987470c SHA-1: 1148861abfacddf2deffb908af3eea1d05747b86 SHA-256: ac1d39bb2195abada9eb7a88d8c0e84575ae3db00eb6e7a78b7182a96459ec72
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL points to a domain that appears to be involved in phishing activities, likely to harvest user credentials. The document body, though heavily obfuscated, contains text related to 'Consumer reports login username password', reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?utm_term=consumer+reports+login+username+password PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f875f0fb8201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5f8ac727ca35e.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/free_2003_saturn_ion_owners_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f89bb91e506b.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/axeda_iot_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/hoodie_template_illustrator_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446492/normal_5faa79965a6d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5f9bca1e9d067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_5f9c96dfa4638.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485695/normal_5fb6023df3bdf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a1db1713-883f-473e-a288-958b0b2e57fa/cannibalism_in_the_cars_satire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac6d3bf6-a69c-419b-8a70-2229f498cf4c/6847688157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71d785a2-a555-4848-a5d1-96c1e948b522/wotujapowibifijexu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD512 5276 bytes
SHA-256: 3847fbc041fc23d47217c5c75d3d9dee419abdeeff961d66b797dd8cca962ff0
font_01_sfnt_off0000e6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EF 3120 bytes
SHA-256: 2d1c02d7faeb7dad5af5d103f135926a0d4fd4e69f3a7da8959d46cf8e88466d
font_02_sfnt_off0000f372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF372 11488 bytes
SHA-256: 680d5fbebfc24bbbf3b23a6713e26f90587973dcef918c9b12982a828ca03978
font_03_sfnt_off00011a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A76 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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