Malicious PDF — malware analysis report

Static analysis result for SHA-256 a19a3919b665a6b3…

MALICIOUS

PDF

80.1 KB Created: 2021-02-13 15:36:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f4ed539c8144a108011e917909223aea SHA-1: 2c5f483b534a439d4af277065de6e250718d5191 SHA-256: a19a3919b665a6b3832419500e92e89d18f4116dbaa4f11aa87fb93c2d28549a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains a lure related to 'Empire show channel on directv' which redirects to a suspicious URL. The PDF structure also suggests potential exploitation or obfuscation techniques.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wix?keyword=empire+show+channel+on+directv PDF link annotation
    • http://zazujig.22web.org/labugorebifupurijabi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495254/normal_5fea030c68a9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449788/normal_5fe717f0b2cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_600baaf28edbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5fce893be790e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490515/normal_60033c79462b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413109/normal_5fd3a61a84b99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_60258c84ce1ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404502/normal_600d9cd77a0c8.pdfIn PDF document text
    • http://tesar-krd.ru/free_video_converter_freemakeerxd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_60111ffe3d577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_601582263b0b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480149/normal_5ff26110edc04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409093/normal_5fec35c72a4fb.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://s3.amazonaws.com/titugome/wamarumixedutamot.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/widofamomup.pdfIn PDF document text
    • http://nukigusesirujop.epizy.com/big_5_personality_traits_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/simplex_algorithm_linear_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/lexical_cohesion_in_discourse_analysis.pdfIn PDF document text
    • http://bokonejedebi.rf.gd/lepekugujoz.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/99738696876.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_off0000ed06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED06 5208 bytes
SHA-256: 00f3791d6e8d96a50393cc1881252871bf3f8fe61d19e1e219171b276bb268d5
font_01_sfnt_off0000fea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA3 11028 bytes
SHA-256: c4ceb832022f241420a122433bdb7ab3f06a731332e3468ece394dccb39c2f7e
font_02_sfnt_off0001245b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1245B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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