Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb264f47e7ab68a…

MALICIOUS

PDF

88.7 KB Created: 2021-02-01 02:42:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 35e97bd5e3bef4fd9f2b6be78c693c15 SHA-1: ac46ead887ede5626be31501c6bc6ca44c46ef7c SHA-256: 2bb264f47e7ab68a42f1cc8cb6c4da2aeef144423e4b6234cb595afc158a82fe
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many hosted on disposable domains, forming a link farm. The primary URL suggests a lure related to 'Google docs templates gallery', indicating a phishing or malware distribution attempt. No scripts were extracted, but the structure and URL patterns are strongly indicative of malicious intent.

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://baarspo.ru/aws?utm_term=google+docs+templates+gallery PDF link annotation
    • https://cdn.sqhk.co/niwonosorude/cgdnUta/moduledatotax.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/hg4hghg/jun_pro_titan_2048_interface.pdfIn PDF document text
    • https://gipumoku.weebly.com/uploads/1/3/4/7/134710759/rolokupu_rexunazovigek.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/tateritegazi-jasiligitaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/fKYQsjg/15199572387.pdfIn PDF document text
    • https://cdn.sqhk.co/tadeketoxab/Aiajbvp/acellus_academy_reviews_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/hhbjc9E/gadijimigovowimivur.pdfIn PDF document text
    • https://bojozavo.weebly.com/uploads/1/3/0/7/130740433/2421284.pdfIn PDF document text
    • https://pogunokele.weebly.com/uploads/1/3/0/7/130739789/7369415.pdfIn PDF document text
    • https://zataxusesuta.weebly.com/uploads/1/3/4/3/134311667/9232128.pdfIn PDF document text
    • https://veriketosamu.weebly.com/uploads/1/3/4/6/134675732/sujoguwimete-dizefupa.pdfIn PDF document text
    • https://lapudaxorekoj.weebly.com/uploads/1/3/0/8/130814283/c26679aeda.pdfIn PDF document text
    • https://gerogebu.weebly.com/uploads/1/3/1/6/131637886/rapadepepedem_dozemulazixa_puwawezerenoju_tuzixupazi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/naxizugenabi/51589166028.pdfIn PDF document text
    • http://ziwutaje.epizy.com/year_6_division_worksheets_uk.pdfIn PDF document text
    • http://naremijex.epizy.com/tuvis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11172 5160 bytes
SHA-256: d96631fb960ad14d699e26da23d41a107eb3a8d46b2663225e0dbf5148b3d15f
font_01_sfnt_off0001230f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1230F 10668 bytes
SHA-256: 2050b51abf78514a67a30b38e3058493a96608f09311f256460f0f7caa476850
font_02_sfnt_off00014761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14761 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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