Malicious PDF — malware analysis report

Static analysis result for SHA-256 47faa1fb2dadcbb5…

MALICIOUS

PDF

85.6 KB Created: 2021-03-14 19:36:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: dce11eb1a1febba90b3ebc6e3b55c17d SHA-1: babef4ad0b2ec34fc322e0dd0c12cced335aaba9 SHA-256: 47faa1fb2dadcbb5e658386ce76c8974b498b40efad14e72409ac27c0ea41325
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is flagged as a link farm on disposable hosting, suggesting it's part of a phishing or malware distribution scheme. The embedded URLs are likely used to redirect the user to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://jacksth.ru/award?keyword=day+trading+swing+trading+pdf PDF link annotation
    • http://pegejoruvufiron.sportsontheweb.net/57785674385.pdfIn PDF document text
    • http://esclub.pro/26951865777xt8fq.pdfIn PDF document text
    • http://romeita.space/68698666517qphyr.pdfIn PDF document text
    • http://bristol-yalta.run/pukutoxasevv9bwn.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/lunebux.pdfIn PDF document text
    • http://topsalon.xyz/fodedutorjk4q.pdfIn PDF document text
    • http://esagafow.fun/mujalekonuzudigad3ep86.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/64248148938.pdfIn PDF document text
    • http://goldstein.berlin/19722197213dmdbl.pdfIn PDF document text
    • http://dikagowoxi.sportsontheweb.net/80191826391.pdfIn PDF document text
    • http://lnstagramoriginal.com/javagodunapipadosebakujahapvm.pdfIn PDF document text
    • http://you-bestshop.xyz/siemens_hearing_aid_service_centerbdyeh.pdfIn PDF document text
    • http://vknart.xyz/sasokikutim3spyc.pdfIn PDF document text
    • http://lg-supportteam.com/free_handjob_von_klixen7dbua.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://uploads.strikinglycdn.com/files/de832373-2435-4409-b4e5-1b337bbdb6c6/why_is_my_vicks_vaporizer_not_steaming.pdfIn PDF document text
    • https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_a413da4572704e1daa2ae9e6cb8e1cb8.pdf?index=trueIn PDF document text
    • https://d45380bd-a93d-4ef2-b2bd-4c7806d1f6db.filesusr.com/ugd/5d2cf3_e1e36bfc51a548889b519e0e257688af.pdf?index=trueIn PDF document text
    • http://xurosuforudev.atwebpages.com/hyperbole_and_a_half_book.pdfIn PDF document text
    • https://9ef77391-fdd1-48d8-ba15-364b07375333.filesusr.com/ugd/ebefdf_471346ed432043cc84172c31dce3efca.pdf?index=trueIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_eeec68356ab34e2b81fb77d83d359cde.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e04eb1a5-8b26-48d2-980d-5d2e3cf4c17d/how_to_fix_delonghi_milk_frother.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_off00010266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10266 4928 bytes
SHA-256: 86bf2c7eb4461c1745048aa4cd430aa2ee8cac1bd3ac37648d643f6f0f6eff72
font_01_sfnt_off00011348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11348 11424 bytes
SHA-256: 6754f88b8b4fa48265370f261c1a7482a177baa0cfb8249e741a9725996cbf8f
font_02_sfnt_off00013a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A68 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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