Malicious PDF — malware analysis report

Static analysis result for SHA-256 32008936ff1e8c10…

MALICIOUS

PDF

76.2 KB Created: 2021-03-15 13:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 59968bf5d48fc9ccdd28f720b6a23c60 SHA-1: bad7a0338fb6f59eefdd2141144f093ddb044276 SHA-256: 32008936ff1e8c106f99ef826739df89c393b1178cdb5f8940b93fdf38742f7c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a lure related to donating furniture during COVID-19, directing users to a malicious URL. Heuristics indicate this is a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=where+can+i+donate+furniture+during+covid+19 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412394/normal_5fed507dc6fb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_60356df8b4d6d.pdfIn PDF document text
    • http://limezage.scienceontheweb.net/neomicina_bacitracina_bula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482648/normal_5fd8a15476dc3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501775/normal_600159992a964.pdfIn PDF document text
    • http://mugedly.xyz/61388105522rf8rs.pdfIn PDF document text
    • http://rocketdocs.us/beautiful_images_for_dp_in_hdmzp6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467273/normal_600be37f42242.pdfIn PDF document text
    • http://frukt.fun/palobufegorh7wll.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5fd5f4172e7d6.pdfIn PDF document text
    • https://vovavurag.weebly.com/uploads/1/3/0/7/130739927/konoponunafufor_sapat_nijakopikug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387061/normal_602c89d8ecd43.pdfIn PDF document text
    • http://speak4pro.com/hollister_jeans_fit_guidesvbh9.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/company_of_heroes_legacy_edition_fullscreen.pdfIn PDF document text
    • http://kurametugugu.mygamesonline.org/51418888629.pdfIn PDF document text
    • http://fidafevemikiwe.mywebcommunity.org/ottlite_desk_lamp_costco_canada.pdfIn PDF document text
    • https://badumanonelom.weebly.com/uploads/1/3/4/0/134040969/981abdabf5a.pdfIn PDF document text
    • http://kuxni.su/el_metro_cuantos_centimetros_tienenl9ue.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/43da5057-e95a-426d-a797-45c5b5d2169c/78816357151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3686945a-47c2-4776-94b0-a8043486b9e8/how_long_does_it_take_to_cook_beef_jerky_in_a_dehydrator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4138a43-9e61-4867-8b5c-73ca4de76880/vafisajifuruvuwugolurakog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8eb4174-5f4d-4fa2-9b1c-7c1877edf7b8/59545425558.pdfIn PDF document text
    • http://nudagimanefej.atwebpages.com/i_cant_find_the_code_for_my_universal_remote.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_off0000ebd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD2 5356 bytes
SHA-256: 62696838fc38c36ebd28ee8b09819008d82a80a047fbc6078a9cb5f2fa1cb79f
font_01_sfnt_off0000fe24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE24 10856 bytes
SHA-256: 2e1dac3d9ad7d1d2f9207f2c090a43cc5157671b88543ce20062b41439b12b63

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