Malicious PDF — malware analysis report

Static analysis result for SHA-256 7479730ba15b51f5…

MALICIOUS

PDF

73.9 KB Created: 2021-02-27 01:26:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 51285b1a1f2de2ec6fd92d1b87afe28f SHA-1: 64625e4de7c9e9e826677ddc3b389531e80787ac SHA-256: 7479730ba15b51f52fc69c376344df4eca66f9716a1e9545e3334775078ab2c8
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs, with a significant number hosted on disposable domains, suggesting an attempt to manipulate search engine results or redirect users to malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the link farm heuristic point towards potential phishing or SEO abuse tactics.

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/wix?keyword=full+spectrum+solutions+minimalist+shooting+mat PDF link annotation
    • https://jogelobob.weebly.com/uploads/1/3/5/9/135961552/9369625.pdfIn PDF document text
    • https://juputifewusa.weebly.com/uploads/1/3/4/4/134435955/5d3bd23a.pdfIn PDF document text
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/rojipixidirilageridi.pdfIn PDF document text
    • https://nupuwumot.weebly.com/uploads/1/3/5/3/135305030/e72483.pdfIn PDF document text
    • https://suxokigivulumu.weebly.com/uploads/1/3/4/4/134479742/8eb4d61077f.pdfIn PDF document text
    • https://radamokugek.weebly.com/uploads/1/3/2/6/132696621/b90d948a98ab62a.pdfIn PDF document text
    • https://cdn.sqhk.co/tinawegu/fEhbhaa/leporalup.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/WidFQ3n/pizza_delivery_jet_ski_funnies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_602c03a0e05bb.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/apc_back_ups_pro_550_review.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/fixovavugi-tuvusi-fajazigaw.pdfIn PDF document text
    • https://lopatitegadusi.weebly.com/uploads/1/3/5/3/135311006/dumekobef_sotafopadab.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/jeeDhcv/panasonic_video_camera_live_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/gehiVp2/92080986389.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/dzxfVhc/vexuveguvimuz.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/barafojiwun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/lunomalu.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/82299714086.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/smart_board_exchange_games.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/what_does_similarities_measure_on_the_wisc-v.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_off0000e37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37C 5300 bytes
SHA-256: b35cffa4141781ef6fabaa53c4f715e02a5f1d898ea821516d1abc228f3f3d62
font_01_sfnt_off0000f55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55C 10692 bytes
SHA-256: b31ba40eccd9e35c6678317f64f1fa0ca7022c1c5ae2bcee756fb181f2fea7e4

Open this report in the interactive analyzer, or submit your own file for analysis.