Malicious PDF — malware analysis report

Static analysis result for SHA-256 a213f32c79e78a04…

MALICIOUS

PDF

78.2 KB Created: 2021-03-12 17:17:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 69276afb4e978426936ec1612a2c2c31 SHA-1: d521f89e9c286766b667076f36a909dc5eaa52b2 SHA-256: a213f32c79e78a04492e37a345e76210c703225eb88c2f9fcd29d6db9bf6ec00
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute further payloads. The document body, though heavily obfuscated, contains text related to 'lease abstract template free', aligning with a lure to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=lease+abstract+template+free PDF link annotation
    • https://fupefodomixeja.weebly.com/uploads/1/3/4/8/134889506/c142a6d626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392210/normal_601ecc0f13df0.pdfIn PDF document text
    • https://viwosakizipisot.weebly.com/uploads/1/3/5/3/135321869/8764721.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450635/normal_6008b126b6546.pdfIn PDF document text
    • https://sipigatijuk.weebly.com/uploads/1/3/3/9/133999294/3b9ad7300c6.pdfIn PDF document text
    • http://jegotaraxipux.iblogger.org/equations_of_straight_line_graphs_worksheet.pdfIn PDF document text
    • https://matimupu.weebly.com/uploads/1/3/4/8/134880469/4723110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449992/normal_603178fa8311a.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/vemopizilozawe_lowogi_lijaxaberopesu_tilobanu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gijomifede.rf.gd/koxejanuzatidav.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_4d8b220f111d4c29b2ecb57b5803d2ba.pdf?index=trueIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_eb79c8b6c0104a8fb5bd97941e28e284.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pidufozu/15051661584.pdfIn PDF document text
    • https://97783159-ced7-426e-9fbd-60d2bb3342fb.filesusr.com/ugd/00058f_f8aa4887442343238b031195572d20e1.pdf?index=trueIn PDF document text
    • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_702a9fb702a14a0b8154189d3c04d9fb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/gewajot.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/54631089225.pdfIn PDF document text
    • http://fukijudetoj.epizy.com/twisted_fate_guide_season_8.pdfIn PDF document text
    • http://semofif.epizy.com/mechanics_and_thermodynamics_of_propulsion_2nd_edition_solutions.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_off0000f15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15F 5240 bytes
SHA-256: c36164d80c64e15c4eccd5ee62a12ac82a8b08c9d361460fe395020085803744
font_01_sfnt_off0001031b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031B 12108 bytes
SHA-256: 13c5751af8a162391b0a2ddea00f9621ecbb312554f6614c21f15c5eb2548975

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