Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76695850970bb54…

MALICIOUS

PDF

82.0 KB Created: 2021-02-26 15:55:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 2026b7ea3ea9ba12c64597788e3fffc4 SHA-1: 2a868b45a97132f97c02b84f2dac2d4f4a4e4426 SHA-256: d76695850970bb54acd5764691ed25c27180f4595377225a01887acae24307a1
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links hosted on disposable domains, characteristic of a link farm designed to redirect users to potentially malicious websites. The document's content and structure strongly suggest an attempt to lure users to external sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=globe+life+life+insurance+rates PDF link annotation
    • http://vipimuxatomefi.medianewsonline.com/which_three_are_key_components_of_an_entity_relationship_model.pdfIn PDF document text
    • https://rumunalitivera.weebly.com/uploads/1/3/4/0/134041361/zurekurenidazajawag.pdfIn PDF document text
    • https://retowukiri.weebly.com/uploads/1/3/4/5/134592720/8a770.pdfIn PDF document text
    • https://salogisamokowo.weebly.com/uploads/1/3/4/6/134649366/5460857.pdfIn PDF document text
    • https://bimevaxufozuz.weebly.com/uploads/1/3/2/6/132683359/09a7a9f3688e685.pdfIn PDF document text
    • http://pevetune.66ghz.com/sifujakibasutodovunomavuk.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/vinubapiwojimosarapuji.pdfIn PDF document text
    • https://fakivafepupu.weebly.com/uploads/1/3/0/8/130873921/3413900.pdfIn PDF document text
    • https://pogizufibedisiw.weebly.com/uploads/1/3/1/6/131606284/rivadexiri.pdfIn PDF document text
    • https://nosovaranipad.weebly.com/uploads/1/3/4/7/134743093/4440434.pdfIn PDF document text
    • https://tafebitekule.weebly.com/uploads/1/3/0/7/130776603/437919.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/92988402512.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/turimivewakevobakajobupe.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/lekomefiwuvulubuzazerize.pdfIn PDF document text
    • https://wedemewimobuxet.weebly.com/uploads/1/3/4/3/134309086/d2e668.pdfIn PDF document text
    • https://sibemawiwojaro.weebly.com/uploads/1/3/4/8/134887292/sasurasi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lejokadedemixo.rf.gd/tvsn_shopping_guide.pdfIn PDF document text
    • http://litorow.myartsonline.com/asus_rog_crosshair_viii_hero_x570_atx_motherboard_manual.pdfIn PDF document text
    • http://bafimilatape.epizy.com/oxford_university_press_catalogue.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FE 4928 bytes
SHA-256: 4afe0f47e5581b50d8c866b0c5842bc63e021f53b2223b2c516f557e7b78f794
font_01_sfnt_off000105ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CE 11424 bytes
SHA-256: 0002e5d0d47266e7f855d695e85ee69107e25e240861835762fdf7f98239745b
font_02_sfnt_off00012cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CB3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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