Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eba2f41935ca1bb…

MALICIOUS

PDF

79.5 KB Created: 2021-04-26 21:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 24461fb9418eed5fb641d303b0820ded SHA-1: 9c4b36c1a58b46f8584e1a28ae1a62afba75e9e0 SHA-256: 0eba2f41935ca1bb613dcb501d496c2be5a6ec0ee1801b35a156acec2800f47c
186 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 payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The primary lure appears to be a search query for 'what's a good toaster oven to buy', likely a pretext to drive traffic to the linked sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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.
  • 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://botokaw.ru/strik?utm_term=what%2527s+a+good+toaster+oven+to+buy PDF link annotation
    • https://nakubinigana.weebly.com/uploads/1/3/1/3/131379761/3363103.pdfIn PDF document text
    • https://cdn.sqhk.co/lisupixiwe/iohjjig/unable_to_login_uber_driver_app.pdfIn PDF document text
    • https://cdn.sqhk.co/nazutupim/dnqMeib/41538450574.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://fotaluxig.weebly.com/uploads/1/3/5/9/135973299/lopetulegate-doxudezuviwi-rimaj.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/777340.pdfIn PDF document text
    • http://wupidubame.mywebcommunity.org/28258274932.pdfIn PDF document text
    • https://lukujoluge.weebly.com/uploads/1/3/4/8/134864233/8733468.pdfIn PDF document text
    • https://rojurunonujimos.weebly.com/uploads/1/3/5/3/135325454/7d662c37.pdfIn PDF document text
    • http://fakaripeti.xyz/albany_county_family_court_forms0z7se.pdfIn PDF document text
    • http://gimemuwet.mypressonline.com/dewiregi.pdfIn PDF document text
    • https://cdn.sqhk.co/gemukojev/yghqxV1/mulufuxa.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/fiwemakirafolu.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/solo_strikes_destiny_2w9xgt.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/programmable_logic_controllers_erickson.pdfIn PDF document text
    • http://mizejodaf.mywebcommunity.org/stock_market_live_graph_today.pdfIn PDF document text
    • http://poroda.site/love_your_life_not_theirs_barnes_and_noblec3q3q.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/eqJgdjc/funny_gif_memes_download.pdfIn PDF document text
    • http://in-step.shop/bojategijuw2r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_23c4c4843b9d4138a2282912d6659a54.pdf?index=trueIn PDF document text
    • https://efa91360-7c21-416c-9d60-3189e0beb381.filesusr.com/ugd/42ffc7_7cc8f58d083744a7b0f2cc8186a05ebc.pdf?index=trueIn PDF document text
    • https://b7af6bb9-01eb-4839-ab56-764651de4344.filesusr.com/ugd/2486b5_00ce23d0e9f8409faec5f15e2f44c826.pdf?index=trueIn PDF document text
    • https://cda84be5-0c54-4c05-8389-97bb004c798d.filesusr.com/ugd/fa9f00_7dffb12f37ad4e5ba733eaa8703e74f9.pdf?index=trueIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_1b4bf5a9c97442a3904faf49d234bf80.pdf?index=trueIn PDF document text
    • https://3edbbcf3-b5b1-446e-9630-835d38fa79e0.filesusr.com/ugd/6908d7_f03e83627bff480ea12ae2ef1f6a1004.pdf?index=trueIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_bc3e836939a64bac8cb25a9d9bf6b66e.pdf?index=trueIn PDF document text
    • https://1de4b56a-3309-4767-83a2-f1bb1ea7c594.filesusr.com/ugd/a6e5e9_61a18b74f94d436da8eea3058dfce991.pdf?index=trueIn 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_off0000f8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EC 5404 bytes
SHA-256: fac16b4af388893fa0b809660a838a39e907626d51e17f3a42edeb82f81c8e5a
font_01_sfnt_off00010b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B62 10836 bytes
SHA-256: 3349b639252ed62cc6a752dcc5408bef52062a69b3d0bf2f25c3e03dd7802af1