Malicious PDF — malware analysis report

Static analysis result for SHA-256 32693cf56a4ad7aa…

MALICIOUS

PDF

72.2 KB Created: 2020-12-16 21:05:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 87c9d0e38922ca5a91c45016a96073ef SHA-1: 7affd2feaba8a861f4ebeef5662b11e438aeec9b SHA-256: 32693cf56a4ad7aa6f1cfc567de45a0d5d69db22a5ea60b5dffc145f56108402
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 identified as malicious by ML classifiers and ClamAV, with a specific detection of 'Pdf.Phishing.Trojan'. A high-severity heuristic indicates an image lure linking to an SEO redirector, which is a common phishing tactic. The embedded URL 'https://traffset.ru/123?utm_term=video+devil+apk+mod' is the primary indicator of compromise, likely leading to a malicious download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=video+devil+apk+mod PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5223f2cf09257bd870b0d/t/5fd68878de5b1220c030cc45/1607895161942/ripize.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5dd1224b06a7eb3219a2a/t/5fc941f76cebf66b99a1e311/1607025144380/pazutudopefuwotomapusev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b73e560c-1cd7-4ea2-a4a8-c58a626de3e7/27936404040.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ac42a5bc066edfb10807/t/5fd2241eb1f69267715f8c32/1607607327580/53551825094.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd56316f6d44b07b8b81c/t/5fc0e52bf81c9a2a0cc33924/1606477100692/warframe_prime_order.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/kowijanip.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/canon_eos_50d_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f22ee5c7695ca99bddc9/t/5fc14fc418e72e5fdb0824e8/1606504388571/imedeen_derma_one_canada.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33b8b3dfdd95b60e431f6/t/5fc398fb3f75b1664342de85/1606654205036/digovova.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC700 4920 bytes
SHA-256: 3ae27f7b73922c2cc34fb9f39475c0b6bb371b788b1d08f04140d1482c8c2bc1
font_01_sfnt_off0000d7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B8 11292 bytes
SHA-256: 3794812fa5f0ac670d116ddbef2d201e84edc0ae5397dfc9a83c76ac9b86e8f7
font_02_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 16380 bytes
SHA-256: e8719be5f9b80cb6f9af27c96a5c28a12bab26029e57f800674122a44afb2bb4

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