Malicious PDF — malware analysis report

Static analysis result for SHA-256 c094fa853442479c…

MALICIOUS

PDF

80.2 KB Created: 2021-01-12 12:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e73b3d2558426ab1daf06c6e62a720a9 SHA-1: 71dddbbfa6f1d672221e310e733c3d285eb0e2f4 SHA-256: c094fa853442479ccbf51ceb7c5635da167da170630a6c2cc1e5fa1759dab1dc
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary focus on directing users to 'traffnew.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting a malicious intent to obscure the true destination or purpose. The ML classifier and ClamAV detection strongly indicate malicious content, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/aws?utm_term=alchemy+game+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407989/normal_5fb986a128adf.pdfIn PDF document text
    • https://site-1180431.mozfiles.com/files/1180431/jalega.pdfIn PDF document text
    • https://mopawikivitofa.weebly.com/uploads/1/3/4/3/134347346/bomigozoravoz_molelebuzevid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_5f9248f043c04.pdfIn PDF document text
    • https://site-1168038.mozfiles.com/files/1168038/wevodetujuzadifipin.pdfIn PDF document text
    • https://site-1177426.mozfiles.com/files/1177426/navneet_books_owner.pdfIn PDF document text
    • https://site-1177591.mozfiles.com/files/1177591/galaxy_wars_classic_space_shooter_apk_uptodown.pdfIn PDF document text
    • https://site-1177484.mozfiles.com/files/1177484/george_orwell_burmese_days.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/jdicHig/tefuwolozave.pdfIn PDF document text
    • https://vajoribenokajug.weebly.com/uploads/1/3/4/7/134713142/507719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/rekopogupotavaxixo.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/48283804875.pdfIn PDF document text
    • https://s3.amazonaws.com/texifaxepag/nosmo_king_paul_shannon.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/zapuwenikirutiruz.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/bopidabutover.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/hollow_man_2000_parents_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06A 5208 bytes
SHA-256: 4f7e219d4902e873a93cd2cbdaf8eed13c89214b0658ae0dc0b5d6c4eb7b2d86
font_01_sfnt_off0000f1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FA 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000fa88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA88 10012 bytes
SHA-256: 46b06bb09f3f5c1bd5fefbe1639db25beb20fcafc73add37153058f68337f304
font_03_sfnt_off00011cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CEA 16660 bytes
SHA-256: 71fe66e8a900eabe62c773f6b9b467243c87e6d484dd0ea34a22194082714177

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