Malicious PDF — malware analysis report

Static analysis result for SHA-256 475b0612fc191602…

MALICIOUS

PDF

79.4 KB Created: 2021-02-25 22:51:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0c1c979db45f396db1791d0d07c45577 SHA-1: bcb71ce37b06b6a724bd664b5e094d73e69c0044 SHA-256: 475b0612fc1916022a82b6f91db5cc76548cbb68817802c6d4ec4f3d77a50a67
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' indicating a large number of outbound links. The primary URL, 'https://druttle.ru/wix?keyword=logitech+meetup+user+manual', suggests a lure to disguise malicious intent. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution.

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 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.
  • 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/wix?keyword=logitech+meetup+user+manual PDF link annotation
    • http://sakulog.sportsontheweb.net/will_star_wars_have_another_trilogy.pdfIn PDF document text
    • http://dokuloraxu.22web.org/avg_sality_remover_free.pdfIn PDF document text
    • https://lulodepi.weebly.com/uploads/1/3/0/7/130776712/petupaxedejera-rewotaluxok-wepopobozuwat-vurilejujimulo.pdfIn PDF document text
    • https://dojibosuxuzepi.weebly.com/uploads/1/3/1/3/131378780/kopejomafiso.pdfIn PDF document text
    • https://jizojalagakamu.weebly.com/uploads/1/3/4/8/134886497/sipigenelovo-sukibiz-vegexajuzexefo.pdfIn PDF document text
    • https://pevopuxavinedun.weebly.com/uploads/1/3/1/4/131406680/1652160.pdfIn PDF document text
    • https://gozobamo.weebly.com/uploads/1/3/4/7/134714837/zepelorowop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rowagaparik.rf.gd/aruba_switch_configuration_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/25075124771.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/adhesive_capsulitis.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/90668541666.pdfIn PDF document text
    • http://pumejusatojajeg.rf.gd/zomorivuwunebilukikutikum.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/vofim.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/28704449200.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/doraturaxewizatanupi.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/mupado.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/pitorakomokor.pdfIn PDF document text
    • http://xarezebabanadot.epizy.com/samsung_55-inch_q80t_4k_qled_smart_tv.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_off0000fa88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA88 5288 bytes
SHA-256: 9ced58bb03f3c7a8c506eed7a049240d6f669cac8b4b4fd1e4e836c493c43336
font_01_sfnt_off00010c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C61 10624 bytes
SHA-256: d55ffc1f762b0f4fb0bc61950dda1e28e9ce96e4a479afa5781578dedfa15020

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