Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f29faebf151fbbb…

MALICIOUS

PDF

78.0 KB Created: 2021-02-27 17:32:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 41d9af7848365b86e40a45258ffbd5d2 SHA-1: a2e07644d35adccccf580b3662f3ae1a9015cd8e SHA-256: 8f29faebf151fbbb496c6d3ad0d3463889121b2766921d57c4bb2f05d8784b44
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains keywords related to 'Poulan chainsaw carburetor parts', likely a lure to attract clicks on the malicious links.

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://ponafet.ru/award?keyword=poulan+chainsaw+carburetor+parts PDF link annotation
    • https://cdn.sqhk.co/gobuwovuv/haYm3ih/55906179073.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/SaifAYk/lowes_greenworks_pressure_washer_2700.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/relgio_monitor_cardaco_speedo_80621g0evnp2.pdfIn PDF document text
    • https://cdn.sqhk.co/zodenizekija/IjcHlSN/richardxpress_s._a_property_management.pdfIn PDF document text
    • http://mandarins.space/fowopcps0a.pdfIn PDF document text
    • http://summerita.fun/death_note_light_and_l_fightf1sim.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/wix_add_files_to_google.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/87071858487.pdfIn PDF document text
    • https://cdn.sqhk.co/zusisoko/jicjj0y/pobawuzujomafi.pdfIn PDF document text
    • http://onlinetyz.xyz/964522432124sd5r.pdfIn PDF document text
    • http://fowirunuwajuk.iblogger.org/294918181.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/ihhckhi/80425924070.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/jedniat/halloween_costume_stores_near_me_now.pdfIn PDF document text
    • http://world-wild-shop.com/29020583257iuwqk.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzaxube/jerhjMP/leatherface_masks_dbd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fiforeru.atwebpages.com/16266992051.pdfIn PDF document text
    • http://xokudofek.epizy.com/3388689591.pdfIn PDF document text
    • http://setevibebevu.epizy.com/scientific_method_vocabulary_worksheet_answer_key.pdfIn PDF document text
    • http://sedabil.epizy.com/android_emulator_for_windows_10_low_specs.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_off0000f517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF517 5252 bytes
SHA-256: f0fe1ed97b5ae9b9fa6d3f8159689353fbfee66886c9085252c2a0129c05d6c9
font_01_sfnt_off000106fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FD 10516 bytes
SHA-256: 2e33fe2c59a44c6306f65bd9661363a00697afcf09e64a08389e6347f77cec5f

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