Malicious PDF — malware analysis report

Static analysis result for SHA-256 62942cac1ad3d29f…

MALICIOUS

PDF

70.9 KB Created: 2020-11-24 09:00:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fad2812e86123ea030ff1798605606ae SHA-1: b2b49a08a2e2cc6a5317fa45ad198226c0d1601e SHA-256: 62942cac1ad3d29f29cdca46a260896d1a1b0114f509d75183b0030131eb6c26
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a link farm and a redirector URL, 'https://traffset.ru/strik?utm_term=oxford+picture+dictionary+arabic+eng', which is likely used to phish for credentials or deliver further malware. The PDF's structure suggests it's designed to appear as a free download, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/strik?utm_term=oxford+picture+dictionary+arabic+eng PDF link annotation
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/4354424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f8b9ae49a10f.pdfIn PDF document text
    • https://pewukuma.weebly.com/uploads/1/3/4/7/134762228/juxikovaganisak.pdfIn PDF document text
    • https://gexaxiwiwa.weebly.com/uploads/1/3/4/4/134480231/mixomixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410695/normal_5fad87ea41ed8.pdfIn PDF document text
    • https://wakutoji.weebly.com/uploads/1/3/4/3/134314583/1089524.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/kapogusamikisuvup.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/pokemon_fire_red_supercheats_one_hit_ok.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/room_on_the_broom_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/wipikixupuxixopuragimure.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/86550400451.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/ms_sql_server_database_size_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/broadcast_receiver_in_kotlin_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/53882171435.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/tabel_asmaul_husna.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB608 2944 bytes
SHA-256: 9a1b5a2132b8e54e66cfd9f18555871e619d0b0678ac6c2645178b4aeaa41eb6
font_01_sfnt_off0000c092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC092 5452 bytes
SHA-256: 58ddbb21aa041b4c5f20b3bff792f6692339410f393e94b8bc491c105827937b
font_02_sfnt_off0000d331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD331 10184 bytes
SHA-256: 0e9256e792107153c5b0b589586470cc0a2e43f18810c6493fe552078398f9eb
font_03_sfnt_off0000f657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF657 16788 bytes
SHA-256: 538fb40c9c4cd77fbece03796f2cda135408f8a97d160398954b765eb7831437

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