Malicious PDF — malware analysis report

Static analysis result for SHA-256 1229efc42f77fce4…

MALICIOUS

PDF

43.5 KB Created: 2020-10-17 03:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4ce7d9e28a64d3ee30c3ad6cf23b376b SHA-1: 678a0b1f243ecfd9aa874573c022695a7c00679b SHA-256: 1229efc42f77fce4f545376f5ab0b9a3dd70d8ed48a606fe2c51236ca772b195
184 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, constituting a link farm. One of these links, https://gettraff.ru/wb?keyword=toplumsal%20cinsiyet%20ve%20iktidar%20connell%20pdf, is identified as a known malicious redirector. The document's structure and the presence of malicious links suggest an attempt to lure users to potentially harmful content, likely as part of a phishing or malware distribution scheme. No scripts were extracted, but the PDF's nature points to T1566.001 (Spearphishing Attachment) as the likely initial access vector.

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/wb?keyword=toplumsal%20cinsiyet%20ve%20iktidar%20connell%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f8a23f355844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f8861f64f88a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f885317710c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f890464955b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f86f86048e8f.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/8390899.pdfIn PDF document text
    • https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/joxot.pdfIn PDF document text
    • https://wovasemuzusalej.weebly.com/uploads/1/3/1/6/131636629/c14d326.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/a4b75fcbcc824.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/zokovidazidite_tojelegilasut_sexitorizazifoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f881bae26a2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f87ad048e48a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f88db13be251.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/161f8890-5b1d-4207-90dc-e43c7979318a/58421772887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3641c03-e7d3-49bd-9c82-7f02acad7d4f/23155078613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bd9e0b9-22f2-4e18-a3a4-ec255857d148/58571380113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44d2af7-7609-48f9-9483-8e9e28acd7d7/lulugopivufutuxok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c341324-cab5-4e5d-9195-ec3e1cd820e9/dipewenozuvokopodopab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7e73322-85fe-4d61-950d-57ab418ad2a7/zajoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00131aeb-5f1b-4cc3-b058-cb4795d94d7f/50200760470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a61b88-199e-47ad-bbc7-cb5724f8d79e/bifizarep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/rakofumivexarefago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0117/4975/files/pathfinder_drawback_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2995/5238/files/mi_enemigo_el_amor_letra_karaoke.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_off00006aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 5476 bytes
SHA-256: 0f8e2b9609f180e8aba4f9254e2c06c4cdb75cd7e025003894c2bab7986ee76e
font_01_sfnt_off00007d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D82 10128 bytes
SHA-256: 8b5f5d5e858637b15b23a12201c14ec17e647012ba27ae9c182063b44aec055a

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