Malicious PDF — malware analysis report

Static analysis result for SHA-256 556c424f139849fb…

MALICIOUS

PDF

77.0 KB Created: 2020-12-19 16:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb45d7a335497082f38d0e57d9cb5492 SHA-1: d210c23c35dada1d1caa7d490b551af0d517812a SHA-256: 556c424f139849fb83bf1f743e35042b169618d7e73245377498a99a344c5133
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating it's a phishing lure using an image to redirect users to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary IOC is the redirector URL, which is likely used to serve a malicious payload or phish for credentials.

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/strik?utm_term=sas+current+date+minus+1+day PDF link annotation
    • https://s3.amazonaws.com/jazuravazaguz/99925341460.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/31397639139.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/rush_limbaugh_flowers_promo_code.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/52967457287.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/45251417167.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fc6cee13b4ee.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/was_genau_bedeutet_formulieren.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/pokemon_reborn_starter_locations.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fceb9df703c0221cac6c897/t/5fd22773b0f0f842d7af638e/1607608180218/ink_master_season_11_contestants_pictures.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce0b38ea95a9497c047aff/t/5fd0762a89fd2c07d103d20d/1607497260446/jowizizagegozixufekum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c4908845d092483324d/1606380621517/2405941349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fefd3f3-5766-41e6-8672-6b4de1fad417/40016931715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6c9247e-97e6-4346-8e11-ccc8fe5d7164/european_pharmacopoeia_8.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

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_off0000cf5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5B 5312 bytes
SHA-256: 19be3adaddefa40e7b22011dfe28e13c1a0cbc193ac3a5d695ba38c3f559dab1
font_01_sfnt_off0000e155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE155 1940 bytes
SHA-256: 414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23
font_02_sfnt_off0000ea8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8B 11864 bytes
SHA-256: eae134a2425b1b7be905fc76e1be2cec27a7ac71d8c28cc040a77d4cf7d3a9d2
font_03_sfnt_off000111b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B5 16160 bytes
SHA-256: 9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc

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