Malicious PDF — malware analysis report

Static analysis result for SHA-256 113882d02a8654cb…

MALICIOUS

PDF

66.2 KB Created: 2021-01-26 12:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caf484b00e0f4b184e31eb55cd1ea01c SHA-1: 729b086634883a979f2120613ab4077e6cccc7ec SHA-256: 113882d02a8654cbf7109b8064e0c83cdd71affd0e6b88027649e9acb43021cd
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'traffmen.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious redirector URL suggests the document is designed to lead the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=harvest+of+empire+pdf+download
    • http://natgood.space/fobegatubegopuvemefipn5wfq.pdf
    • http://uablog.website/parkour_games_for_free_on_pc26b9y.pdf
    • http://mbfsopg.com/alien_vs_pinball_mod_full_apkebloh.pdf
    • http://znatural.space/xeledoxuwomum0nlk.pdf
    • https://cdn.sqhk.co/mifijizudi/ThaYihc/zemivewu.pdf
    • https://cdn.sqhk.co/vaxarogajib/DfEOFij/wizard_of_oz_characters_movie.pdf
    • http://birjand.design/weather_radar_live_streaming_near_me_nowzvbra.pdf
    • http://yourbigdick.space/agora_video_call_android_githubwg462.pdf
    • http://italysummer.fun/angry_birds_bad_piggies_20-_2q96rx.pdf
    • http://winoorama.website/rateluluboginosinawozub4nmwn.pdf
    • http://mini-cam1.club/pivujowb8n8j.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/salosibejodod/kijape.pdf
    • https://s3.amazonaws.com/xilasisefi/tuberculous_meningitis.pdf
    • https://s3.amazonaws.com/fibesezati/17749793511.pdf
    • https://s3.amazonaws.com/fowonaxul/calculator_app_for_android_source_code.pdf
    • https://s3.amazonaws.com/tokatefozude/free_sheet_music_barcarolle_offenbach.pdf
    • https://s3.amazonaws.com/rawesaragegugar/best_video_maker_for_android_phone.pdf
    • https://s3.amazonaws.com/mamukawaxatali/dichiarazione_sostitutiva_di_atto_notorio_editabile.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c873.bin
8650e7b9d55a046f760ba7be040baebe7d2c31fac6c9524dbb0ed98213ffa55b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC873 5300 bytes
font_01_sfnt_off0000da76.bin
ff80d5b0060cb76782172849721a937ec8d1fff67cece3ad5bc8fdd28283f35c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA76 9656 bytes

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