Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1a712610d39689…

MALICIOUS

PDF

86.0 KB Created: 2021-03-24 20:59:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: fa0d20beef95b9614da4578771db58d7 SHA-1: 209aac1963809aac6fa67f0f36a80dbc30779ffb SHA-256: 0c1a712610d396891add7040b4a2ace4536156c8246db598c7debae220d62adc
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URIs point towards an attempt to leverage external resources for malicious purposes.

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.
  • 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://maypoin.ru/award?keyword=attestation+sur+l+honneur+divorce+pdf PDF link annotation
    • http://livecopyrightverification.com/understanding_electronics_components_free_download95xth.pdfIn PDF document text
    • http://appeal-ig.com/john_deere_gx345_parts_list43hz1.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/where_is_the_oil_filter_on_a_troy_bilt_pony.pdfIn PDF document text
    • https://lisiruzefixa.weebly.com/uploads/1/3/4/4/134495270/neranasorekudiw_lotufidakifagas_devusojexisa_vibizelax.pdfIn PDF document text
    • http://theraisins.pro/cuddeback_ambush_ir_model_1187_partspwvha.pdfIn PDF document text
    • http://wusator.mygamesonline.org/67360904476.pdfIn PDF document text
    • http://hairsprof.ru/699434047568xnp9.pdfIn PDF document text
    • http://sepukolobu.sportsontheweb.net/wugimut.pdfIn PDF document text
    • http://lejifip.sportsontheweb.net/xujivowedalezu.pdfIn PDF document text
    • https://zepukuliro.weebly.com/uploads/1/3/5/9/135964459/48c2b283a081f4d.pdfIn PDF document text
    • http://interbankdigital.com/jowaxedaponxisno.pdfIn PDF document text
    • https://rukagevilatixa.weebly.com/uploads/1/3/1/6/131608017/8010686.pdfIn PDF document text
    • https://dilomosef.weebly.com/uploads/1/3/4/3/134316650/bajegepuxazula.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
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_5a985ccd36d146d89cd509c72ab26a71.pdf?index=trueIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_48dc5a26b860495184fbb106ac1a8aa6.pdf?index=trueIn PDF document text
    • https://eaae50f7-3b1c-4f1b-9b3c-e2a48377569d.filesusr.com/ugd/b96e41_f678e9f5032c425b98d1eb9a1ce5da1d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/14298c5d-8d16-4ebc-9b96-946fe4f1c383/lexus_rx_350_price_in_nigeria_2015.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/vorowavituwemorarodalugip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/223bcce7-96a5-4da5-a4cf-845c2bcba589/busipovifokoruzuwekojoruf.pdfIn PDF document text
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_8c311959a90b4cfbb3c3ede055e67918.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0D 5172 bytes
SHA-256: 7ac0220ad3b93128de266c04b6d400aa391990eef41db65746f345ff7f1f9610
font_01_sfnt_off0000fe98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE98 11764 bytes
SHA-256: 2e9980beedbf3fc347226155330b07aab97e65d78015a20f92e0341ec2b0c765
font_02_sfnt_off00012538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12538 16252 bytes
SHA-256: 16fa9b4a691375c29e0a142672fbd83bc2409e00da4ab49527c2e52878770ecc
font_03_sfnt_off00013a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A98 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.