Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0642c4cbd01461…

MALICIOUS

PDF

90.4 KB Created: 2021-01-08 04:27:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: aff84113d0d542836b14ee98c522cb79 SHA-1: ce0b8d0ff447e02137020a1208b5f9dccf67ffa4 SHA-256: 7d0642c4cbd01461baaf6c94f15ff82fa34312f76548f4b3501882d832a91e92
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, with the primary one being `https://gettraff.ru/123?utm_term=apocalypse+now+redux+script+pdf`. This suggests the file is designed to lure users into visiting malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://gettraff.ru/123?utm_term=apocalypse+now+redux+script+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413838/normal_5f94a8864c9e2.pdfIn PDF document text
    • https://sawanizoso.weebly.com/uploads/1/3/4/6/134654845/takipadapexum.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452846/normal_5fb755b90aa67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494146/normal_5fbb86d0c3fcf.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/5629471c-72f7-4ef3-a89a-b5d5ab3be9fc/22951862850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10de41dd-69bc-47b8-9b47-f2469fc38e22/95012107244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026c2928-3ddf-41c8-b5b0-0bb306b266d0/america_the_story_of_us_division.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d669cf24-f5d0-43d2-8e3f-829d835be664/xawimijitasobusep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6c4eb62-81f9-411a-8fc1-374141530c9a/takefewubowiveganoba.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/21032762967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b964fc3-0fab-4a5d-b541-634dee82670a/koxoxiwegatiniwude.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_off0000fa57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA57 5284 bytes
SHA-256: 38258b3c2a311bdf8d49291956a207d0664a8f452c5fcadbab740b810ce0d2b5
font_01_sfnt_off00010c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C69 11484 bytes
SHA-256: 28a3ece93a3471e18e2aa72dee028b9d16a7267fa801f798ec72ab730896a58e
font_02_sfnt_off0001336f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1336F 17716 bytes
SHA-256: bfc388512fab44808dcdc0bd27dc37a91792a8d9a892c6a45c91faea688781d0
font_03_sfnt_off00014e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E28 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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