Malicious PDF — malware analysis report

Static analysis result for SHA-256 f51ac27d9c902df5…

MALICIOUS

PDF

48.9 KB Created: 2020-10-27 10:41:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e68a9128915c54463115958a07ff2235 SHA-1: df936616cca8f2897d1a8c6c149c0eb346e7c92c SHA-256: f51ac27d9c902df5a7620609f58c82f5d119caa8cbb71acc3827cee0c2e3d928
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/strik?keyword=capillus+hair+cap+reviews In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_5f8ef5226dc7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5f8c6d77cd5e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f8ec2dd056cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6363/7703/files/zonodebupoluravafefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a730903c-30b1-47dd-bbcd-0f0f5d19cc87/30643633991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78904af-7c4a-405b-a01f-37d8e4d847ba/40719201413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21ebada5-4184-423f-a47f-ae91a0c9df76/zanemosonojaxobokepefo.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/computer_programming_books_in_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/4486795680.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/banach_steinhaus_theorem.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/54906025511.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/poc_bible_malayalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecc6c914-7f67-41c7-935b-0479193106e0/tavodelivorigevugez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0945e3cc-9eaf-4f1d-ae53-40867d62689c/laxosugu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 5080 bytes
SHA-256: c0ebdc02c95d797ea7c0dac9bbcac3ec130e7f38ada57b10ae62b8ce11eb31dc
font_01_sfnt_off00007bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFB 11356 bytes
SHA-256: 0376e75cbe5435fc1e60103121b894f292b9fb4e78a87e70462e3b6a1b4995de
font_02_sfnt_off0000a1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1BE 16148 bytes
SHA-256: dbe1f6873dfbc63a557840fa26764ed1e24daf10180a919a5f50e881975b6f06

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