Malicious PDF — malware analysis report

Static analysis result for SHA-256 609fc3001342ace0…

MALICIOUS

PDF

73.9 KB Created: 2021-03-10 11:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 77f84d9f2384d0c12c5a7e4591e135b1 SHA-1: 263a68ce0434d91ca1bd62ed39fc4e82a1c8c90c SHA-256: 609fc3001342ace065e676f5ee0a7a6175abfc874e5ad61f5ce877b522ada9df
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, suggesting an attempt to distribute malware or phish for credentials. The primary URL, 'https://soxebez.ru/wix?keyword=papa%2527s+cheeseria+apk+to+go', appears to be a lure for game-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=papa%2527s+cheeseria+apk+to+go PDF link annotation
    • http://vejenov.iblogger.org/76316124376.pdfIn PDF document text
    • http://pezuzumosuxuku.22web.org/82399909453.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_603264989881e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409814/normal_5fdf862cdb323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449768/normal_602da998607ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_602b91be4dfe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476436/normal_6011c02870edf.pdfIn PDF document text
    • http://file-id.ru/no_bejeweled_gameadtjh.pdfIn PDF document text
    • http://instapriz.website/7173160993sui9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459481/normal_603a6101cc65e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magajavopisili.epizy.com/p_g_practice_test_answers.pdfIn PDF document text
    • http://juwijez.rf.gd/61345229060.pdfIn PDF document text
    • http://nogobixa.epizy.com/vebuxasodelivomuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0969e4f-c4cc-4f47-af17-032afc200b2e/pinaxomawirobin.pdfIn PDF document text
    • http://sopixixu.epizy.com/special_request_chit_navy_form.pdfIn PDF document text
    • http://rexerikilo.epizy.com/misplaced_modifiers_exercise_2_answers.pdfIn PDF document text
    • http://pufawalaxovosi.epizy.com/35701752081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a79b907-f679-48be-a630-2d23b42d00a2/48434175115.pdfIn PDF document text
    • http://wajiletum.epizy.com/sijewot.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_off0000dc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 5260 bytes
SHA-256: 9a2e11055fdf2ea0e2ab8a4bd300115c787a069543e2f193953ef45a28c82398
font_01_sfnt_off0000ee32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE32 14316 bytes
SHA-256: 466aff0a8a433c83c95c26c2d9fd03c39bb841a7e888cd06f1d704c68c45edf9

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