Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0a7ada341d28c9…

MALICIOUS

PDF

76.8 KB Created: 2021-02-20 03:30:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fc5b1eb199ef72747e8b461cb113fe56 SHA-1: 370950b8d3257a106b48b0acbf624d94410893e0 SHA-256: 0e0a7ada341d28c9a55bcfc5a3db95f50e03c0c8cec761b8432881448e904433
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically pointing to a site related to a '1400 calorie meal plan for weight loss', suggesting a phishing or social engineering lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a pattern of hosting multiple links on disposable domains, reinforcing the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=1400+calorie+meal+plan+for+weight+loss PDF link annotation
    • https://cdn.sqhk.co/budafitanu/jf1Qejh/stachu_jones_nie_zyje.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/podeguv8xpwg.pdfIn PDF document text
    • https://wodirukuz.weebly.com/uploads/1/3/5/3/135398055/6686191.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383692/normal_5fe3d9a4236e6.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/6obhgit/kavazafut.pdfIn PDF document text
    • http://hot-money.fun/claro_que_si_workbook_answerst7mj2.pdfIn PDF document text
    • https://zajosozuxisofe.weebly.com/uploads/1/3/1/4/131407459/1f8dde1840.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/wekabaxonidiku.pdfIn PDF document text
    • https://cdn.sqhk.co/kotoweraga/z9mbkja/birizatased.pdfIn PDF document text
    • https://redodire.weebly.com/uploads/1/3/1/4/131408340/8480170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417329/normal_601bb61853976.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388819/normal_5ffefb9d456c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://varepekolati.rf.gd/that_s_the_way_aha_aha_song.pdfIn PDF document text
    • http://femavumifixomud.rf.gd/59859761698.pdfIn PDF document text
    • http://vokotikif.epizy.com/dillon_650_6.5_creedmoor_conversion_kit.pdfIn PDF document text
    • http://xaxefoz.epizy.com/practice_drawing_straight_lines_worksheets.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_off0000eea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA9 5708 bytes
SHA-256: 67a8c43182b5f7b73ab6c0ec101d3cf9e4d09ddb15a49c404c9334e9e8461f83
font_01_sfnt_off00010208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10208 10520 bytes
SHA-256: 39c85f66bc7d8e184da9bcf29e8da2eb309969b49fb867d3bc04c00261c0f43c

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