Malicious PDF — malware analysis report

Static analysis result for SHA-256 a785a94e86aa921b…

MALICIOUS

PDF

80.6 KB Created: 2021-03-19 14:45:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cde8deedf0ab87398aa7ed10e291c5b9 SHA-1: 22bdb75d7a58eda3dee96359b7a12584bae4d350 SHA-256: a785a94e86aa921b29d2e900537f80953312fa9430a8b8dfc13f6d367cb5a1c4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/award?keyword=mueller+report+text+pdf+download PDF link annotation
    • http://meetsalle.xyz/how_to_change_needle_on_brother_project_runway_sewing_machine34tbs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408719/normal_604dea5a56d10.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/bia00id/puppy_runny_poop_after_worming.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383792/normal_5fc6499d728d1.pdfIn PDF document text
    • http://topmassage.net/25121189960ifjag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481168/normal_6031954f03ae0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459628/normal_5fca74a7c1d28.pdfIn PDF document text
    • http://fresh-ita.space/borukebulgsd7z.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/LIgSgc7/stream_movies_online_no_sign_up.pdfIn PDF document text
    • https://cdn.sqhk.co/visobipibe/ghjihbS/71957312992.pdfIn PDF document text
    • http://zerkalo-fugicar.website/26431489042wk1m2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_60021ac0ad44d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a931313-14b8-43d4-bc06-03f1d18fad74/mamiya_rz67_lens_equivalent.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/reverse_image_search_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c073d70e-02ba-456b-9b41-1990a8396c1e/dragon_age_origins_class_change_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5488d0e7-02aa-4cc4-865d-d46582db5536/neriraxaxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa184f0c-6b65-4b60-aae0-c0a573956784/comptia_security_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8ab5e12-a45f-4af7-9fc6-615934008f7c/rcbs_reloading_equipment_ebay.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/1936868682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eee28ec-aabd-46c0-ae49-33e2b2eaeb05/lokizaregut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a8255a-ff58-4818-bf32-259d2fb01e01/xeboxasirifojexawifufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/877511f9-9e43-4df5-b450-38f14d617427/miniature_dachshund_size.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/doxojikenazesevaxujowuw.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC80 5024 bytes
SHA-256: 115c87de940b2ae69b3acf4394919bc6be7a0a077c9c340ceda032caa150577d
font_01_sfnt_off00010dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCB 10964 bytes
SHA-256: 6e5a9ebc62ab7d2a618d8e0f0c1c5d141bc6bd71d35197aee3103c0d54431789

Open this report in the interactive analyzer, or submit your own file for analysis.