Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ccf717f91827464…

MALICIOUS

PDF

76.7 KB Created: 2021-03-06 19:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3b98742d20587ac6c37c36b5f8d818d8 SHA-1: e77aec53423430955d854587af633f31b70e2bca SHA-256: 1ccf717f918274642431194a2884b77c981d5135da4efdb94f001469ab2ec48e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document body contains a deceptive question about BMW servicing, which is a common lure for phishing attacks. Numerous external URLs are embedded, with at least one pointing to a suspicious domain ('druttle.ru') that is likely part of the attack chain, potentially leading to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=does+it+cost+more+to+service+a+bmw PDF link annotation
    • http://arbitestpark.xyz/11802752034vb852.pdfIn PDF document text
    • http://amst-watch-v1.club/852542493plt5q.pdfIn PDF document text
    • http://ctuxuu.com/napoleon_hill_foundation_books22jaj.pdfIn PDF document text
    • http://nububezobuto.22web.org/canon_6d_ii_manual.pdfIn PDF document text
    • http://erogan-encolumbia.site/seduligyw1o6.pdfIn PDF document text
    • http://vagoneviwesum.66ghz.com/tutul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fd7723c31cac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412158/normal_602b8502c90df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376870/normal_5fe437b507432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493891/normal_60328119cdaa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475564/normal_5fd63dac97f13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xovanixavujanu.epizy.com/decimal_multiplication_worksheet_kuta.pdfIn PDF document text
    • http://durunorutap.epizy.com/sokupegefibab.pdfIn PDF document text
    • http://wikeratofi.epizy.com/duvukavurofodipimuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6ba1984-b5ef-4ef3-a8b4-539bccdaecf1/sagakode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d720638a-7a0b-4aec-ab49-d63d20bbcfde/sowilolapitotu.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/catarina_and_the_others_full.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/zavibiniwugebukadelapix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab39fdb-0560-4719-971a-10b2924c71b4/53506087633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f038f9-1388-4970-b665-7a5eedcb2949/temogimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de248d8-b48a-42cf-9f3b-8099c9aeafb3/deresasesizal.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_off0000ee1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1D 5204 bytes
SHA-256: 7a8a604bfc4e879adbab9879c43f539e8f3596002440ec7b5235978cbbbb3b08
font_01_sfnt_off0000ffd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD1 10920 bytes
SHA-256: a043dd469772af66721864153958775c3b1821287ea260e66b4b651198882782

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