Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b44854ca0cc537…

MALICIOUS

PDF

89.0 KB Created: 2021-05-08 05:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 129be66b7e442826c82a6dc0f04eddab SHA-1: 05dc128044f7aa33dfe70274d6eefe6b6e9c3840 SHA-256: 62b44854ca0cc537911816f1d4be26c239b65d98f459d0a60415c1efc4d7cff6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to 'dangerous goods regulations', suggesting a targeted phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/strik?utm_term=what+is+iata+dangerous+goods+regulations PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477629/normal_5ff8a7ba8eae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_601c91623c9ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_5fd677123fb39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390371/normal_601e63e0e48a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484154/normal_606e4019a2259.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/2cae0834-f8bd-46ad-b99c-33bbb554e728/77926118657.pdfIn PDF document text
    • http://titaleze.rf.gd/cbse_online_marksheet_correction.pdfIn PDF document text
    • http://wokezafuvix.epizy.com/banomoya_remix_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0fefe94-8393-4867-86cc-61634d595ab0/rca_led50b45rq_main_board.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2f95f5-4a81-42db-a993-263cea4ef115/juz_30_islamicnet.pdfIn PDF document text
    • http://rixutizabegu.rf.gd/71297781938.pdfIn PDF document text
    • http://zasuzutan.rf.gd/81906557128.pdfIn PDF document text
    • http://genividi.epizy.com/13572737908.pdfIn PDF document text
    • http://somupoxalinarek.rf.gd/susonisigijatur.pdfIn PDF document text
    • http://roxazapamakitij.rf.gd/42926068831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02f92a0d-6309-47d3-bc11-3ec24ccc23da/aos_path_to_glory_download.pdfIn PDF document text
    • http://lejugilisotev.rf.gd/71478283743.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_off000113b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B5 4984 bytes
SHA-256: 32424839cc5b0e2260dde17d05a1b9aaebf9f2323e56ec146e28d97d1ac805fd
font_01_sfnt_off0001249e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1249E 10648 bytes
SHA-256: 7158adf3ef0ff34304b61da089ac167ea937d45df1f88ab27f7f6bce07cd5047
font_02_sfnt_off000148fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148FB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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