Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c1f23772ba831d…

MALICIOUS

PDF

75.7 KB Created: 2021-03-16 03:03:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1eadc22757d90b3b6c9003091f49528c SHA-1: b3deb3bd675f48b4f74d7548d892ab661df0c32f SHA-256: 70c1f23772ba831d12852333763ceaf888b5270c380f36416ec3e957b9a36bce
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/strik?utm_term=cockney+slang+dictionary+pdf PDF link annotation
    • http://gelupulofevabek.medianewsonline.com/45326005915.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/how_to_listen_to_hemi_sync.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/ieeghgi/boxajejiresekixo.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/aChiicm/game_genie_sega_genesis_golden_axe_3.pdfIn PDF document text
    • http://magewedidi.iblogger.org/anandamath_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/4lLhhd8/pikinozet.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/will_there_be_stars_out_tonight.pdfIn PDF document text
    • http://zinepifulew.22web.org/fifty_shades_darker_mp4_movie_download_300mb.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/fKhhVgi/download_twitter_video_iphone_mymedia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_ae4d4277ae17430da08eda56dfb296c8.pdf?index=trueIn PDF document text
    • https://161abad2-7de2-49bb-9904-d6e2a620a662.filesusr.com/ugd/2eec94_0a5da8dc3adf412f9683889daea57522.pdf?index=trueIn PDF document text
    • http://nisanasedupava.epizy.com/cycling_merit_badge_pamphlet.pdfIn PDF document text
    • http://rexerikilo.epizy.com/string_format_java_escape_percent.pdfIn PDF document text
    • http://sapuxomaz.epizy.com/xobidilezubenagogewat.pdfIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_7e72724969c1464f837875fb0bdbf909.pdf?index=trueIn PDF document text
    • http://doxenobuso.epizy.com/84472848086.pdfIn PDF document text
    • http://nifekubipaxo.epizy.com/xejulomeful.pdfIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_437d9f8154244070a60cd3db3b36687e.pdf?index=trueIn PDF document text
    • http://sejekowosabukog.epizy.com/noriwiwomuzixowowi.pdfIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_c1dfd9a7011a4148b19f7d0dc5010801.pdf?index=trueIn PDF document text
    • http://gotuzarodeg.epizy.com/math_9_answer_key_module_4.pdfIn PDF document text
    • https://00f02ae0-031c-4cf4-85c3-86bbc6d7deb2.filesusr.com/ugd/13f2e4_b5498d3b458e44fca854ccbd3e5fcedf.pdf?index=trueIn PDF document text
    • http://ridimonaf.rf.gd/alabaster_girl.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE971 5396 bytes
SHA-256: 77e440b2bd65de6cec4a1f4c5220277d83cdc7cb0bca401e678b3b847d344d8e
font_01_sfnt_off0000fbec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEC 11132 bytes
SHA-256: 093d46942b30080880752c52179202fdc7233a7bdb908bb9885323134591f8c8

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