Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9e97d8c80b2428…

MALICIOUS

PDF

36.4 KB Created: 2020-11-04 14:57:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: bcb767f9e714fe6ef2762d3a158e8dfa SHA-1: 0fa1c0448aed5655882aa5d9e85cf1afa874d795 SHA-256: 7c9e97d8c80b2428c32c7929a15976d0cd0a15cd3e8b0e636ae589988ade4743
154 Risk Score

Malware Insights

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

This PDF file contains numerous links to external resources, with one prominent link identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL https://cctraff.ru/strik?keyword=navy+travel+claim+pdf, suggesting a phishing or scam attempt. The presence of many external PDF links also indicates a potential link farm for SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=navy+travel+claim+pdf In PDF document text
    • https://jirixakevafu.weebly.com/uploads/1/3/4/4/134404576/vepemad-pesowaf-tagatufaxuz.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://s3.amazonaws.com/vufupu/xigubojasekage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e175a3-7c51-40dd-aba0-828bfeea9302/pekixekejejuxikupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b43fdf-d4fe-474b-b562-514fb81c242a/90664760385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9316a0f8-afcf-4fe3-83ea-cbf1e82cc520/65192654680.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/fundamentals_of_the_java_programming_language_java_se_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3db4f821-21a8-4da8-a82b-c3fde0be5a87/kezijilezunazizevixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee0e31b5-9433-43f0-9cb3-20842d4b79dd/munawig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a83f14-908a-485e-bad8-e21abce3543c/monogezaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/gopro_hero_7_black_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0b3c88-feb8-4041-8ed5-a411dabe1fc4/52970745292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c905a8bf-14a6-4260-a67d-c35cc32273c6/gewelexizujikariz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69eb902-a4fe-4968-89c9-f61ef0dcd8ef/55357526491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff44d6c6-1efb-4b04-8ee4-05e586268871/37877804120.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/powamijikalasakixarewuniv.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/possessive_nouns_worksheet_grade_6.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4754 4828 bytes
SHA-256: be4243457710748d64e034a08e2a5ccf0d4c255628672adc2fbc3353be3b9d1b
font_01_sfnt_off000057cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CC 9092 bytes
SHA-256: 9a9529e117e71b2ad97d316036decf54b1d56cab751ded6cd4fb67dc47eebfdd
font_02_sfnt_off000076da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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