Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afa2abe8d2b98ca…

MALICIOUS

PDF

87.4 KB Created: 2021-03-18 01:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9deaee454c92b3cff399075960b47835 SHA-1: 20de512d25055ed0c60935b0c20613da9a5ed7c8 SHA-256: 0afa2abe8d2b98ca76c6e2395cc4c9f2f43b8ff52cb70f007bd87950e0c9e549
186 Risk Score

Malware Insights

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

This PDF file was 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 redirect users to malicious content. The primary URL, 'https://lozipotod.ru/strik?utm_term=el+libro+tibetano+de+los+muertos+pdf+completo', appears to be a lure for a specific PDF document, likely to facilitate phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=el+libro+tibetano+de+los+muertos+pdf+completo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476924/normal_5fffa3f913588.pdfIn PDF document text
    • https://rudiwiguxovo.weebly.com/uploads/1/3/5/3/135317070/logevebogiz-vakenej-fikifikafak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366995/normal_5fe11dac28446.pdfIn PDF document text
    • http://yogait.space/95850225045k2yl4.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimurami/jjeifig/rifelululitudupoloti.pdfIn PDF document text
    • https://webuwoterin.weebly.com/uploads/1/3/4/5/134589655/4238622.pdfIn PDF document text
    • https://cdn.sqhk.co/joxipadij/byGhcmX/geometry_wars_3_dimensions_evolved_metacritic.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/15238610496w7wgn.pdfIn PDF document text
    • https://cdn.sqhk.co/zumumolebajo/rMyhhic/felagafofutokedevogut.pdfIn PDF document text
    • http://gbarb.me/composite_functions_worksheet_with_answers_kutapwj8n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477910/normal_6006a5781d35c.pdfIn PDF document text
    • https://cdn.sqhk.co/venujotiwufo/hasha5r/85929318430.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/ii3oI2e/puzzle_3d_harry_potter_ravensburger.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/cvibG8q/car_racing_2020_slope_climbs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://s3.amazonaws.com/bisiku/angular_formcontrol_select_required.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/are_school_uniforms_not_a_good_idea.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
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E3 5400 bytes
SHA-256: d607962aa8e8676a2a4f56848bd6b397766d469a087590ec7cd637829c45943a
font_01_sfnt_off00010927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10927 11852 bytes
SHA-256: 61122efb561febca2cca9d1373bdd5d5a177724f77cdf67c4c64c2ee0c396edf
font_02_sfnt_off00012370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12370 13620 bytes
SHA-256: d5cac6cc54461f533ccff0b7509d1d001bcd17195396d8bdd6ed87872fdc38a1

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