Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b043dfb19fabb6c…

MALICIOUS

PDF

74.5 KB Created: 2021-04-20 04:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: dec0f348378dd61cce6075574e4f3c0e SHA-1: ef49a61f01f8793ffe394e7a1b054cae984fb7d0 SHA-256: 0b043dfb19fabb6c3ee49c98436735f40fd8b3dabbda444913717ec1a537dca5
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated and appears to be junk data, suggesting the primary function is to host and deliver malicious links.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=what+are+the+5+types+of+commands+in+a+drill In PDF document text
    • https://ruzudagozigiwis.weebly.com/uploads/1/3/5/3/135394236/zokubomavarutakit.pdfIn PDF document text
    • https://revawovaweku.weebly.com/uploads/1/3/4/0/134013066/6735856.pdfIn PDF document text
    • http://jozarizotugi.22web.org/63729347840.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/Szjhjis/43477441316.pdfIn PDF document text
    • https://kagivosivozavex.weebly.com/uploads/1/3/4/7/134746508/pogebigokupofo.pdfIn PDF document text
    • http://vofimavotejaso.22web.org/89850842567.pdfIn PDF document text
    • https://gexirirexov.weebly.com/uploads/1/3/0/8/130874239/ziwita.pdfIn PDF document text
    • http://wewudiwiwojob.22web.org/britannicus_play.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxatotukaru/geJfieI/ceiling_design_catalogue_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/WihoSt4/my_arcade_retro_arcade_machine_x.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/caLriia/war_and_order_gameplay.pdfIn PDF document text
    • https://dipabuxirakilat.weebly.com/uploads/1/3/1/0/131071076/4883017.pdfIn PDF document text
    • https://mipikarekegimo.weebly.com/uploads/1/3/1/6/131606279/gajob.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/ekhdF3P/nejutesawokukunipabotataw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://widiximiz.rf.gd/accelerometer_working_principle.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/advanced_cardiac_life_support_2017.pdfIn PDF document text
    • http://sevavaxup.rf.gd/why_is_my_cox_wifi_blinking_blue.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/52482755892.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/79028111219.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/31101563263.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/40256482322.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_off0000e376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE376 5636 bytes
SHA-256: 9a8ef238fd56fded715bfc08acc9febdb80bdbde5cda9af0c79be778ef0d4b03
font_01_sfnt_off0000f68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68E 11136 bytes
SHA-256: b96672031026d88780a9f67722b6e3a35761a89d70e40e0d6ac41852e522eb4d

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