Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e568bf2dc79032…

MALICIOUS

PDF

93.3 KB Created: 2021-02-09 20:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 03da0b0baae0839af71df2ca4e7a2bc5 SHA-1: d7439ac17f45f022149d9b9cf615a528a408d81f SHA-256: e9e568bf2dc790327af2f3785a95bc61826cdb48531d2430790c3b982573540d
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection further confirm the malicious nature of the file.

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 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://druttle.ru/123?utm_term=reglamento+de+basquetbol+2019 PDF link annotation
    • http://tortomsk.ru/76099754484xdj4x.pdfIn PDF document text
    • https://kowalarezanir.weebly.com/uploads/1/3/1/4/131438161/9280658.pdfIn PDF document text
    • http://pannochki-art.com/fenenewekezigam59yh4.pdfIn PDF document text
    • http://negeduji.66ghz.com/80456020230.pdfIn PDF document text
    • http://zonafuluza.iblogger.org/causes_of_bone_marrow_failure.pdfIn PDF document text
    • https://ridewavovelomu.weebly.com/uploads/1/3/4/6/134697160/9318284.pdfIn PDF document text
    • http://bigno.space/star_wars_battlefront_2_inferno_squad11bme.pdfIn PDF document text
    • https://nalodewemutut.weebly.com/uploads/1/3/1/1/131164475/4506473.pdfIn PDF document text
    • http://azorocheat6.xyz/pathfinder_kingmaker_octavia_romancejscru.pdfIn PDF document text
    • http://sizegivip.22web.org/xejibudezifexogemoligugu.pdfIn PDF document text
    • https://rajizoru.weebly.com/uploads/1/3/1/8/131856770/1535694.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lisokabosexipep.epizy.com/pokemon_adventure_games_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/iphone_6_ringtones_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/51049041373.pdfIn PDF document text
    • http://xizilagitakov.epizy.com/tefupoxijixopo.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/fofukopavopopugexawep.pdfIn PDF document text
    • http://zinezalidoratov.rf.gd/10533121689.pdfIn PDF document text
    • http://vizulubafaxal.epizy.com/36377562953.pdfIn PDF document text
    • http://matogojetize.rf.gd/40359679213.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/69082153976.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129FE 5804 bytes
SHA-256: ca858f2a49f891dfabdd0a1939262913fb4699db7dd18a188907a65f9458392a
font_01_sfnt_off00013da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA4 12592 bytes
SHA-256: e7933da8f55dda360e2b44b72d5a0c8c80ba8c0d626f953220c03c14c8106ef3

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