Malicious PDF — malware analysis report

Static analysis result for SHA-256 db002dbc7eb6c187…

MALICIOUS

PDF

69.0 KB Created: 2020-12-24 11:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c6bf33661c383483de6e754b0f0d9c1a SHA-1: b90ac2db59c6b25f0e5a76039b25a11f30c2530d SHA-256: db002dbc7eb6c18777bf92e3158ce4a75e0c51c82bfe21806495d01327857a1e
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/strik?utm_term=drive+ahead+sports+apk+android+oyun+club PDF link annotation
    • https://cdn.sqhk.co/sulojumi/hpggShd/download_real_football_2016_with_real_player_names.pdfIn PDF document text
    • https://jubekufolofifi.weebly.com/uploads/1/3/4/5/134593927/paxivivefamukaxu.pdfIn PDF document text
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/befajivorelina_givexebezukipa_kuzapidojixubo.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/4082147.pdfIn PDF document text
    • https://wisixujedos.weebly.com/uploads/1/3/4/7/134732494/tulozazigora-forin-zatam-pelogukujumem.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/gjgvVox/82045220361.pdfIn PDF document text
    • https://kisigitoteke.weebly.com/uploads/1/3/3/9/133997396/gejexidotim-sulotug-pezelidulawaza.pdfIn PDF document text
    • https://cdn.sqhk.co/nutakurij/HlJj0he/kuzetewep.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/sitosukiwutile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5f8ffd99ddb63.pdfIn PDF document text
    • https://dedidolijara.weebly.com/uploads/1/3/4/6/134666782/suvawozefod-mopusedilegiv.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/6520184.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/UhGpih7/3119810894.pdfIn PDF document text
    • https://cdn.sqhk.co/babakobesuxe/RDvSMY2/looping_video_in_youtube_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24D 5528 bytes
SHA-256: e14e3cc5bcee2d460d216a8bdb0cb4969eb970fb673b16b1a2b545116f2d84e1
font_01_sfnt_off0000e51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51D 9972 bytes
SHA-256: 9c388f687f7b154311ca4224cf76716423e81aba603c275b229aa1d263f0f5be

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