Malicious PDF — malware analysis report

Static analysis result for SHA-256 980a4f45d77a748a…

MALICIOUS

PDF

79.1 KB Created: 2021-03-18 23:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 7f47d1e20f936a12415b9639d798b454 SHA-1: 3110ff6b3ea9e5ef51da1772d459d33b8210a342 SHA-256: 980a4f45d77a748a7085f4ea4c05b539e5a4db76e1a42e543f247c174da382a1
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, with at least one pointing to a suspicious domain ('soxebez.ru') that is likely used for malicious redirection. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests a link farm designed to obscure malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/123?utm_term=jhankar+beats+movie+songs++pagalworld PDF link annotation
    • http://sewawena.scienceontheweb.net/is_it_bad_to_have_two_w_on_your_transcript.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/jjnQii5/write_notes_on_metallic_bond_in_chemistry.pdfIn PDF document text
    • https://cdn.sqhk.co/tepikipo/ji8hfid/46774503997.pdfIn PDF document text
    • http://waferaboteb.mypressonline.com/what_is_an_example_of_scientific_literacy.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/25405114674.pdfIn PDF document text
    • https://cdn.sqhk.co/lagusive/ijruo3e/moxupufavesajovux.pdfIn PDF document text
    • http://vuzetasavuxoso.mygamesonline.org/28234044673.pdfIn PDF document text
    • http://setokanekema.mygamesonline.org/88837535776.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/ajiifgj/59412662738.pdfIn PDF document text
    • http://wabiferofuvud.mygamesonline.org/i_want_to_buy_an_existing_small_business.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/sony_a300_camera_user_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/2hjifjj/world_market_wicker_desk_chair.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7322f44d-5cb7-45f5-8521-a79093f6ce74.filesusr.com/ugd/dd0890_e965a3c82e414808a34f61a1e495de6d.pdf?index=trueIn PDF document text
    • https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_a2c71cdeaeb34abc8abc6d78ba2b78ee.pdf?index=trueIn PDF document text
    • https://52ed6390-a5c1-4502-9f93-599cf6d98ad1.filesusr.com/ugd/f7fbc8_3d3d74307cb24dbc899e8495763e1f3c.pdf?index=trueIn PDF document text
    • https://d4078116-a2d5-466f-97e6-20d899f6ca30.filesusr.com/ugd/576447_5c4728724d7f43e38fda8950c7778c00.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/35f3d01b-b870-48de-a307-7de4bf3e0eb3/vafujufoxabilukolowejozaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1252824-2061-4781-834e-ea82e1e40af6/does_sony_xplod_have_bluetooth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d53fca9-6a56-4544-b254-01746d848c9d/vulegajat.pdfIn PDF document text
    • https://86b7bb9a-6a0b-496c-a062-e8aa60c365d0.filesusr.com/ugd/dcf311_4c6880c0b3334cf1a5a594d4702d91fe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cefb44b8-e516-40ce-9522-a679ef4478f4/what_are_the_four_principles_of_nonverbal_communication.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_off0000f492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 5716 bytes
SHA-256: ffbc532d294036c6732a180cda75e2544833d24eb5d032d0a1f235003ab9e19c
font_01_sfnt_off000107ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107ED 11556 bytes
SHA-256: e0dc0eb09369b68ba181a512c83fc6b7dfa93a84ae420a7ccd044f562611d16b

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