Malicious PDF — malware analysis report

Static analysis result for SHA-256 744040ea4d734495…

MALICIOUS

PDF

72.0 KB Created: 2021-02-25 15:29:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bad0a0cdcaaf1bed8d348a5de624e93c SHA-1: f0d6742a75ce4058b0356a347a5757bc268cf2ce SHA-256: 744040ea4d7344953e72e52aef130c385f8f250dc355aa05d0b7a6867b29335b
186 Risk Score

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=john+deere+310+repair+manual PDF link annotation
    • https://cdn.sqhk.co/gofelaxes/3fMntWV/ios_instrument_tuner_app.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/long_john_silver_coupons_family_meal.pdfIn PDF document text
    • https://nibevomixosu.weebly.com/uploads/1/3/4/1/134108547/6286f9b.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/vugimiluxu.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/dgi0jh2/what_does_vz_navigator_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/lakivasulis/giV4gfj/big_red_wine_glass_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/ggdje74/12342961646.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/1964203022.pdfIn PDF document text
    • https://tipirigemiwar.weebly.com/uploads/1/3/4/0/134016889/nedilunukufude_guvilir_vusasebu_bogadepik.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/tokatefozude/wimaxobupufafufujuku.pdfIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/67060333931.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/duvuvigus.pdfIn PDF document text
    • http://sasukagisodubex.onlinewebshop.net/17990414636.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/bees_saal_baad_1988_full_movie.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/41073267926.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_off0000dd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD38 5368 bytes
SHA-256: a63610858a16bad93edc7a2422c0db9928c7dc945d39ef1fceffe2be44f25363
font_01_sfnt_off0000ef50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF50 10608 bytes
SHA-256: 4f8820dee27497887bcf2584a8ab7caa6a47f5790683e2389a5266fd6e88cbce