Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb42934d4d5c14e5…

MALICIOUS

PDF

109.2 KB Created: 2020-12-23 14:38:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ceedb86167c0e91333b3eebfda7dbbd SHA-1: f5b872e58a73b5e19946d230d279aec8f07cad20 SHA-256: bb42934d4d5c14e586c7f1076bd5f1a6177fda5f0e926d4f4c22123a5ded27c7
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors. The primary malicious URL identified is traffking.ru, which is flagged as a redirector. The document body is heavily obfuscated and appears to be junk data, suggesting the links are the primary vector for malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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://traffking.ru/aws?utm_term=minna+no+nihongo+mondai+answer+key In PDF document text
    • https://static.s123-cdn-static.com/uploads/4481540/normal_5fcf12424aa30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369645/normal_5fa73ca6d680a.pdfIn PDF document text
    • https://tusefekojeseto.weebly.com/uploads/1/3/4/4/134437698/mefavur.pdfIn PDF document text
    • https://wunenogapo.weebly.com/uploads/1/3/4/5/134509221/jegakisej.pdfIn PDF document text
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/8251742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477873/normal_5fade3b28ba62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387718/normal_5fc4b7abadb1d.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/tedupakiro.pdfIn PDF document text
    • https://kukezedom.weebly.com/uploads/1/3/4/6/134629177/5981880.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1a1551aa-5ed2-402a-ab65-330b0b2d88ae/bagepanuledosuxume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f9ed10-f41c-428a-8162-4ef2bdef9bb6/89436175755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e191fd-43da-4c02-b477-929d28fd3ed4/jotujusagabapuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf28808-5844-4528-a973-4ff3b38ffec4/82327676313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26ccdf2-9d95-48e3-9e9f-da0ada4a79ee/dojadila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a84bed58-9f27-4873-8de9-6e59c6297aee/philter_of_love_uses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb9c91b-b28d-46c1-bb42-1b364a68a9ad/watubut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/808af6e0-3bbd-4f74-b675-d4596665a04b/santa_claus_and_his_old_lady_cheech_chong.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d1d0234-be11-4579-85d6-ec2829dba33c/25540775781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6599420-80b8-4668-a178-375d151a8b7d/xolibuseganuwo.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAD 10204 bytes
SHA-256: a05b7854aced67ce648ca8e550dbd0f74bf2758dfb8b381984accf58ff57731d
font_01_sfnt_off00012bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC1 5176 bytes
SHA-256: 8701ba4eb5ec36d4ced35af898f8e605b2328aa8f121df4838e165105c5bfeb8
font_02_sfnt_off00013d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D2F 10600 bytes
SHA-256: f49084d48801e54ba0cf1f994954ed539e8045b7786726c3d7ef0b9a471189e4
font_03_sfnt_off00015b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B20 11300 bytes
SHA-256: 5864638477fe0d7f701d0366069f5972fc78cc4eee487259fffe9e036a380e37
font_04_sfnt_off000181cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181CC 16376 bytes
SHA-256: c3d0ee408bee49a88931d2ac630a9fb52e88a46fabab5a72aa19e78bbe1d3826
font_05_sfnt_off00019774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19774 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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