Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2eb9337b6b0503e…

MALICIOUS

PDF

76.6 KB Created: 2021-06-10 02:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ec2edf8a44bc08a824c2e50ea5cbc5fb SHA-1: a92183d6d8485eedbc046a8f15fd03463fd4b159 SHA-256: f2eb9337b6b0503e139b83fc2bdd7c9b5135d1c195ce877c1682e78816a84dbd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a site offering a 'snapchat apk mod', suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing attempt, likely leveraging a known PDF exploit to redirect the user.

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://oniceh.ru/pbw?utm_term=snapchat+apk+mod PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4428062/normal_5fdfd5102dbcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412573/normal_6014436d8058a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385617/normal_5feb722f20341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410722/normal_600910c752b2e.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
    • http://jetubabup.pbworks.com/f/nimazadegokominaxure.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/89750121753.pdfIn PDF document text
    • http://jojekepodef.pbworks.com/w/file/fetch/144770256/sovuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8413b07-1b0c-4b7a-862f-908c2561d988/ez_go_golf_cart_brake_problems.pdfIn PDF document text
    • http://didaneguk.pbworks.com/f/petty_cash_count_sheet_template.pdfIn PDF document text
    • http://lakobun.pbworks.com/w/file/fetch/144967635/dupudedazadorejetajoliga.pdfIn PDF document text
    • http://jukozatixul.pbworks.com/w/file/fetch/144713853/marlin_model_336_lever_action_rifle_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19ed7e02-b99e-4b00-8a03-89df6e13cf3e/vaxebulopaviwuwugoj.pdfIn PDF document text
    • http://vuvikix.pbworks.com/w/file/fetch/144799722/vivis.pdfIn PDF document text
    • http://lipovosufuk.pbworks.com/f/android_9_for_redmi_note_4.pdfIn PDF document text
    • http://kajegareniti.pbworks.com/f/fofafaladiburivin.pdfIn PDF document text
    • http://zanopadik.pbworks.com/f/prasna_marga_malayalam_free_download.pdfIn PDF document text
    • http://wejojixi.pbworks.com/f/23642201200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec7b1a4-7cbf-40fa-ad51-43da59aafc83/tabixamofozudujipuku.pdfIn PDF document text
    • http://pifidopexi.pbworks.com/w/file/fetch/144751773/vubixevenujisanipojib.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

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_off0000e360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE360 4796 bytes
SHA-256: 2944dc5a452d0c51c2af069ff42a4ece0cc381ace8a4f3b1d5236f6ad5e6701d
font_01_sfnt_off0000f366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF366 10332 bytes
SHA-256: f40c63a8dc1ba3f8159cae6a372a8a19636c31e17a1a7f60d4b39eb7eb320e32
font_02_sfnt_off000116e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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