Malicious PDF — malware analysis report

Static analysis result for SHA-256 375148ce7e7a98fc…

MALICIOUS

PDF

78.5 KB Created: 2021-03-21 00:53:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3b20e8f1bd0aa759f3a9bb58760ad9d0 SHA-1: 2c23ff5f53b8a64980f266a5a3658c6ceee9a956 SHA-256: 375148ce7e7a98fcc8672713a1e271ccc0cb312b28c3af6f3607594d064dbff8
126 Risk Score

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 or trojan threat. It contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, appears to be a lure related to search queries, directing users to potentially malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/strik?utm_term=how+do+you+air+fry+french+fries+in+a+convection+oven PDF link annotation
    • https://wewosidexavita.weebly.com/uploads/1/3/4/6/134648598/sugalowiji.pdfIn PDF document text
    • http://iciapp.xyz/how_do_you_get_hilton_rewardshxdu9.pdfIn PDF document text
    • https://taregegojife.weebly.com/uploads/1/3/3/9/133997559/da1c3f312cdd2.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/gelivakimitalopozi3rl6n.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/jdFgnhc/lodigorure.pdfIn PDF document text
    • https://wimupajano.weebly.com/uploads/1/3/4/6/134682998/5005941.pdfIn PDF document text
    • https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/nonasotetinovase.pdfIn PDF document text
    • http://love-cosmetics.shop/88127133759hu23v.pdfIn PDF document text
    • https://dewokiwo.weebly.com/uploads/1/3/6/0/136028273/wopafepovax.pdfIn PDF document text
    • http://opt05.ru/how_to_become_a_health_nursel426i.pdfIn PDF document text
    • https://gapidegit.weebly.com/uploads/1/3/1/3/131379699/4d8f8.pdfIn PDF document text
    • https://giboritozi.weebly.com/uploads/1/3/1/3/131379296/9468733.pdfIn PDF document text
    • http://lumacy.site/free_ameatuer_pornhgmdu.pdfIn PDF document text
    • http://supportcopyright.net/pemexezalefepikoxepaeg1qb.pdfIn PDF document text
    • http://f13x.xyz/rising_of_the_shield_hero_light_novel_spoilersn77c8.pdfIn PDF document text
    • https://cdn.sqhk.co/zolilobup/iehfmeN/the_bucket_list_movie_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dilobowuz/ePsuEet/cake_recipe_without_eggs_and_butter.pdfIn PDF document text
    • http://3-bureaureport.info/vefatewebetewixoiw1ar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b272abc7-478a-48c2-bc52-ffa470a23dab/cunto_es_lo_mximo_que_puede_durar_una_fiebre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a534eee-6145-4da1-a460-1dfc2ec323f3/fiwuzabalowokexetuxigamiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f097462-30a8-498d-be78-140b6739bf04/jiwuvadilorutakuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/784f4e9c-1420-4c42-bee8-80d22f1d2dd5/the_art_of_manipulating_fabric_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2643a19f-9a87-4bb6-99c0-c89b64ff2f78/benunebu.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_off0000f4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BF 5292 bytes
SHA-256: 223dbcc16edf510de93c01fdcdc46233bca533424b9f2b591253a3e9ab1a1f8d
font_01_sfnt_off000106d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D9 11072 bytes
SHA-256: f1d748531ec544bd8c582a3a13dba44b62cf6c4e9e4ae9e843ee0c531deba2d7

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