Malicious PDF — malware analysis report

Static analysis result for SHA-256 568058ddc366ed8b…

MALICIOUS

PDF

38.7 KB Created: 2020-10-04 12:15:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 816c992f0b1363a87426ef2ce784eebb SHA-1: 5569a3a94f33f888e489239c534655f623693117 SHA-256: 568058ddc366ed8bfcc024b3b4182750fabc2452d291cc4d660ab5db497f6699
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by an ML classifier and contains a significant number of embedded links, many pointing to external PDFs. One of these links, 'https://gettraff.ru/pify?keyword=3d+shape+sheet+ks1', is flagged as a known malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/pify?keyword=3d+shape+sheet+ks1 In PDF document text
    • http://soleteb.unitychristian.com/uploads/1/3/0/7/130738970/vexog_nenivawegiwit.pdfIn PDF document text
    • http://files.saublebeachnaturals.com/uploads/1/3/1/8/131857981/watasitugedoratu.pdfIn PDF document text
    • http://files.music2dance2djs.com/uploads/1/3/0/8/130813887/gikokiliganis.pdfIn PDF document text
    • http://files.kphtheatreproductions.com/uploads/1/3/1/4/131411197/8810745.pdfIn PDF document text
    • http://files.lisa-stanley.com/uploads/1/3/1/8/131871568/c36038b0a7a36.pdfIn PDF document text
    • http://files.michaeletherington.com/uploads/1/3/1/6/131637308/3218456.pdfIn PDF document text
    • http://files.calabriarental.com/uploads/1/3/1/4/131406082/pusosav.pdfIn PDF document text
    • http://gedeze.kimbarrystudio.com/uploads/1/3/0/7/130775413/3655507.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b077de3b-a99e-49ee-acde-40524b72e3aa/sanuvabekedarusisesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f14e9a9-075f-4737-984d-00ce255139e1/vewinerezisevut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc2106b2-b5e9-4dd9-b395-2341ec6194a5/wesilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f21fde-a167-42fa-abf2-714bd8dd15ab/52248072908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c42087-2fb3-42de-9843-6f4436e34d13/koremilulananoviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/partes_de_un_motor_elctrico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1820/2521/files/kofubegilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7372/7383/files/96516251150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8567/files/43836788042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/appliance_parts_weber_road_columbus_ohio.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_off00005972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5972 5104 bytes
SHA-256: 46abfbd4b55fd71873789fd604e8c6bd6a9889ea36f7e93735bdd7943715a320
font_01_sfnt_off00006acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACC 10068 bytes
SHA-256: 465ce63a25aa32cadfd7762ced93522b909bbcf6d8e6e31ec6176cb01a0399b3

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