Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97965be043f452e…

MALICIOUS

PDF

95.8 KB Created: 2021-05-08 08:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 975eb5600f8babc325100d570ca9ea35 SHA-1: 319fc4dbb272b27fe94f5d2b16e60385d0a43593 SHA-256: f97965be043f452e49f287a43eb57dabfed6d51cb1d850e2b14eb2b607ac1d53
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one identified as a potential phishing lure related to a graphic designer CV. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further malware or phishing content. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristics suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://pelibifir.ru/strik?utm_term=graphic+designer+cv+format+pdf PDF link annotation
    • http://znasila.ru/23573150711ey4sy.pdfIn PDF document text
    • http://about-igsupport.com/lc_tri_guitar_sheetkxici.pdfIn PDF document text
    • https://vevatujiv.weebly.com/uploads/1/3/1/4/131482893/mezakesuguxotexed.pdfIn PDF document text
    • https://kinijenu.weebly.com/uploads/1/3/4/6/134641264/xixineka.pdfIn PDF document text
    • http://kurs1.xyz/692759176099djl4.pdfIn PDF document text
    • https://votuxujalesobe.weebly.com/uploads/1/3/4/6/134683371/3a8dbfa85.pdfIn PDF document text
    • http://afracheat4.xyz/72289310017m8sgx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd997ce3-4af0-4afc-ac83-1a8fabe77ed0/how_to_chart_neuro_exam.pdfIn PDF document text
    • http://nuforikoxiv.epizy.com/15056229250.pdfIn PDF document text
    • http://mabagojovas.epizy.com/19383378110.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/talutufuveduwadusofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c9f9368-d581-4bf2-9f6b-972201a1c458/41561969941.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/xovezido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5e735af-415c-4ca8-988c-5f246dd3527e/persuasive_essay_examples_for_elementary_students.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/grant_of_year_end_bonus_2018_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/bazeberalejidinozati.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/50802558467.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/philip_freneau_the_wild_honeysuckle_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/company_logo_design_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/825a07bf-3386-4c80-9a5b-c3b829d30ce6/26003841044.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/fedisugomaledo.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_off0001399f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1399F 5628 bytes
SHA-256: c4d6730e928896820292a1b18c9036fdf5cece26e07963d7b67379f8da9cf4d9
font_01_sfnt_off00014ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CA6 11080 bytes
SHA-256: c6eaeb5e3ee672fa982cb47b2fc6138f24da5af2658963c7bca940ed73d98ef0

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