Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fcecc669b50e6fb…

MALICIOUS

PDF

84.3 KB Created: 2021-03-09 12:34:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f1b344ef3182a16aa33f6aa00ce9dd78 SHA-1: 574339c5381b06fc56a42b4027f1b711fbbcf561 SHA-256: 0fcecc669b50e6fb2715a8f373083c682cca4febfd66ec5468f735bf9d075fe7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://jumiwimov.ru/123?utm_term=bates+motel+season+5+parents+guide PDF link annotation
    • http://copyrightprivacy.site/40717469096wg9uv.pdfIn PDF document text
    • https://jelijase.weebly.com/uploads/1/3/4/6/134694082/b3f0576d.pdfIn PDF document text
    • http://uber-global.com/baby_boy_names_meaning_god_answers_prayersz50da.pdfIn PDF document text
    • https://pulapafux.weebly.com/uploads/1/3/0/8/130874232/afce846.pdfIn PDF document text
    • http://idealica-ituficiale.website/mimunalijiriwi5hvhl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jazifuz.epizy.com/49030935411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a627d52-af98-41a2-8e02-7e088c7a3a7b/sioux_645_valve_grinder_manual.pdfIn PDF document text
    • http://veridipu.rf.gd/61920812538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e27832-6ae8-412a-a9f0-b3c4fed0d7b8/21395310022.pdfIn PDF document text
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_ab0a8b0444404d97bac6daaf5c6571ee.pdf?index=trueIn PDF document text
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_e3a8e1aeb4b346b6bb9683adedab8421.pdf?index=trueIn PDF document text
    • http://motuvemulavoko.epizy.com/28691369383.pdfIn PDF document text
    • http://nixitomo.rf.gd/84347087399.pdfIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_67884636d9ab4f6e9612a129be12becc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f51e971-34eb-4879-a6d0-481534dca172/towadugifakiranapumak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e75e1af-3834-4dc5-aa9a-064b5cfb3e84/where_does_the_rainbow_start_and_end.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_off00010d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D46 5452 bytes
SHA-256: ccc3b6f08502b77fd1669c54314a99806d43a69fc8db5248c23ef8a4a1400dab
font_01_sfnt_off00011fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB5 10752 bytes
SHA-256: 291ea6624dd10611b2ba36333cb563517d5b0db7f112d56d1f8c72578d457e6f

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