Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b5dd86316d8d95…

MALICIOUS

PDF

73.9 KB Created: 2021-02-27 07:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a14a3673b27e4437c493e7e740224d1d SHA-1: 0d6c11bed30741015d2b8728dbe9576cd3da9a98 SHA-256: 49b5dd86316d8d959ce6f8729209779cc4e4171c119e3aec429c5c5f59531f54
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, including one that mimics a search query, likely intended to trick users into visiting a malicious site. The PDF's structure and embedded links suggest it's designed to redirect users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wb?keyword=how%20to%20use%20photoshop%20cs3%20in%20hindi PDF link annotation
    • http://blockingscenery.com/vevezadefoguxinusuwlabhn.pdfIn PDF document text
    • https://fodivavix.weebly.com/uploads/1/3/1/4/131483454/657a22916c1f4.pdfIn PDF document text
    • https://lumevukivejus.weebly.com/uploads/1/3/0/8/130874583/fedim-zolapifalalel-nuvebavab-xilotunonimo.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/milk_and_honey_book_free.pdfIn PDF document text
    • https://mowasevibipogo.weebly.com/uploads/1/3/1/3/131379904/xotirigogogajof_resezete_kamurij_banubugu.pdfIn PDF document text
    • http://kokolonesafu.getenjoyment.net/68528851669.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/a4_size_world_map_outline_printable_a4.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/new_9.9_evinrude_outboard_motor_for_sale.pdfIn PDF document text
    • https://gomimujetaveve.weebly.com/uploads/1/3/1/4/131406784/68c635ed.pdfIn PDF document text
    • http://wopedejani.iblogger.org/canon_mg3120_how_to_change_ink.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fasokefukolu.epizy.com/gibevovir.pdfIn PDF document text
    • http://zunedolu.rf.gd/oecd_guidelines_2018.pdfIn PDF document text
    • http://figedid.rf.gd/lupipa.pdfIn PDF document text
    • http://tupaguwojisese.rf.gd/35024439203.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/38846786852.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/fogezosaravuledu.pdfIn PDF document text
    • http://penefilagew.epizy.com/dress_down_day_meaning_in_french.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/21351886798.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/que_debo_hacer_si_un_familiar_tiene_covid_19.pdfIn PDF document text
    • http://zolivowubek.epizy.com/elantra_2012_manual.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_off0000e539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE539 5040 bytes
SHA-256: 7e221cb61108f7ab89ace746a7f0975de960a8ca66e8b1563c172987c59c16c9
font_01_sfnt_off0000f671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF671 10580 bytes
SHA-256: 4efea98e116bbb80862f74d754f05199c308cc0ac7564531a41e2b304248f1a9

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