Malicious PDF — malware analysis report

Static analysis result for SHA-256 08118f37118d15ec…

MALICIOUS

PDF

78.4 KB Created: 2021-03-17 09:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3c904a52202fa9499c00367b52993eb1 SHA-1: 364951fa597352dbce5a31fc821931dca9f298ca SHA-256: 08118f37118d15ecd8c8fbd6d71b5dd5deb54e64b78e68cabf8dfa298ae42afd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially malicious sites or phishing pages. The presence of embedded URLs and the nature of the link farm indicate an attempt to distribute further payloads or harvest credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=dark+tapestry+oracle+pathfinder PDF link annotation
    • https://cdn.sqhk.co/juxerawabuf/AwxFigQ/ferojuduraneredojo.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/jPFGzhg/wordbrain_2_vegetables_level_5_word_champion.pdfIn PDF document text
    • https://padawevuwelidas.weebly.com/uploads/1/3/1/4/131438111/89fb614dda.pdfIn PDF document text
    • https://cdn.sqhk.co/furikute/djcI6hf/likup.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/4Wugjih/77181223128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_6021f9b74c31f.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/idCkkgf/power_supply_circuit_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/duiOEFW/gbox_iptv_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459929/normal_5ff7ca61b549a.pdfIn PDF document text
    • https://totuseki.weebly.com/uploads/1/3/5/3/135322554/5af70a8d3729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_603911c48344e.pdfIn PDF document text
    • https://rimofunoduw.weebly.com/uploads/1/3/4/5/134525219/6325171.pdfIn PDF document text
    • https://cdn.sqhk.co/fudopalizew/e93hjFt/vevemejudezubopudoremunif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372076/normal_600802cd452dc.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/Qihcfhd/pet_full_hd_wallpapers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480145/normal_5fd057321f6ef.pdfIn PDF document text
    • https://wabaxudazisivi.weebly.com/uploads/1/3/3/9/133986682/3453636.pdfIn PDF document text
    • https://vudegerolo.weebly.com/uploads/1/3/1/4/131452783/5490900.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/811a21b2-00ce-4a80-8d61-35ebbe51204d/sipunirezafuva.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/slayer_reign_in_blood_rar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd371b5c-d67f-45f2-955d-8e429f90c8e7/62838014907.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/beveridge_report_1942_5_evils.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/pegujotetaruzenojaxedi.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/copernican_revolution_kuhn.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/deadlands_reloaded_core_rulebook.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_off0000f54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54E 5408 bytes
SHA-256: ef2b023eb31f27fd6de1b7d01a15c97e89ca5f24735666563a787d9accb10609
font_01_sfnt_off000107c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C1 10932 bytes
SHA-256: 96ae689441ccd132323a85f3566428d47666138d63c74c99b111415016fdb59e