Malicious PDF — malware analysis report

Static analysis result for SHA-256 163516fda6e7bcc4…

MALICIOUS

PDF

245.1 KB Created: 2021-03-15 13:58:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 923a6450310a1879199088a5e49edc40 SHA-1: 9c99d7f7b63725f284dc934584594eb2c4980af6 SHA-256: 163516fda6e7bcc465b82bd70931c9ecc799a1b330c8ce2a43e0e6b5f5db084d
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to an SEO-optimized link. The primary malicious URL identified is 'https://lozipotod.ru/award?keyword=blades+in+the+dark+pdf+free'. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting its malicious nature. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9921

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://lozipotod.ru/award?keyword=blades+in+the+dark+pdf+free PDF link annotation
    • https://s3.amazonaws.com/zozofufulolig/sitet.pdfIn PDF document text
    • https://gumabudisipinef.weebly.com/uploads/1/3/2/7/132712006/8361414.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/asking_and_giving_directions_in_english.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fe065d983e04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418379/normal_603d60506c991.pdfIn PDF document text
    • https://pabaxovazat.weebly.com/uploads/1/3/4/3/134323574/goveka.pdfIn PDF document text
    • https://kupefuvewugixo.weebly.com/uploads/1/3/4/8/134849821/1924297.pdfIn PDF document text
    • https://jirewolekaza.weebly.com/uploads/1/3/4/3/134387643/306d4d401c.pdfIn PDF document text
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/salubikowurovizemu.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/fixed_asset_management_policy_template.pdfIn PDF document text
    • https://vupixesit.weebly.com/uploads/1/3/2/7/132740805/bunewuvelabomet.pdfIn PDF document text
    • https://xawewidijaxiju.weebly.com/uploads/1/3/4/2/134266046/14db54a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490377/normal_603565409a413.pdfIn PDF document text
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/tixofe_mewekukafak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_6046be5cc7bc0.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/73110900636.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386837/normal_604ec57de4918.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_9284f4d45e1c428f99bf7d15d3807b55.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/18740a15-4c87-4c34-9ff9-f76c7219c453/juvaxuxisodoxur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b961565-5dd1-49a7-b909-4618ae9d9474/gezigatugukokilufevabux.pdfIn PDF document text
    • https://d8d078ea-10ec-4787-8e21-ef6e32b87a24.filesusr.com/ugd/8f6098_8e3f1bd46ae54cceb6accfc14f64f4bd.pdf?index=trueIn PDF document text
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_42d27993bcac4f069381dae39a4ac2c3.pdf?index=trueIn 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36A2D 1768 bytes
SHA-256: 4d48c425ebef90c2d02d06bcf645bfe766804625a466b4613fba07e24684c3c9
font_01_sfnt_off000372d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x372D4 5240 bytes
SHA-256: 53cb990b6e81c843545885655f424f7fa19997a14bfacd81c64598694f0e6a15
font_02_sfnt_off000384a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x384A4 12496 bytes
SHA-256: b89fa42f76156ffc784535a605479ecd39f076a9e42ccc834add6598a48eba74
font_03_sfnt_off0003ae86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE86 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330