Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df7781072466dae…

MALICIOUS

PDF

47.7 KB Created: 2020-11-02 15:36:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d5cb616ac3f4683f020e6035e5673629 SHA-1: def0c48a63f0d64e7e18bc26aa2374c1ce9da332 SHA-256: 9df7781072466dae9208d19713442d86916be1339ba8ee3eadd7d0aa4175a81a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=themes+of+metamorphosis+by+kafka In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/8536469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5f911b6022983.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_5f9c5acdac439.pdfIn PDF document text
    • https://najuxobetejip.weebly.com/uploads/1/3/4/2/134265875/gimomiguwebovopinev.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/potofaw/best_self_self_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/quality_assurance_plan_example.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/dance_plus_5_grand_finale.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/13294614121.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/definitions_of_accounting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0110/8421/files/kawuzelaxibebunawunivabek.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://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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E7 5364 bytes
SHA-256: 8be1784619d01cd0be3e277aa4140b4ffcc320758c0d52ac233522932d29865a
font_01_sfnt_off00007aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFF 10028 bytes
SHA-256: 9bff30e031e908a681d2a23ed361517decbddeddad49b86eb83db85628b07717
font_02_sfnt_off00009d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D7D 16060 bytes
SHA-256: d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc

Open this report in the interactive analyzer, or submit your own file for analysis.