Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be012a546001a17…

MALICIOUS

PDF

64.1 KB Created: 2020-11-20 04:09:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 04eb4c79f22e315eb3ddafbdb3990133 SHA-1: d07095a1b95c8300f6ca009c9ece8c40d45d8a51 SHA-256: 8be012a546001a171e931fbd86ae5649915ddc0082db0fdb8497c36d29562b3f
194 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/strik?utm_term=aaj+din+valentine+da+mp3+song+download PDF link annotation
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/258552.pdfIn PDF document text
    • https://jafowunasakubiv.weebly.com/uploads/1/3/1/4/131437393/63a714.pdfIn PDF document text
    • https://wusatotaluvak.weebly.com/uploads/1/3/4/4/134469206/zexixomexaxujojip.pdfIn PDF document text
    • https://taxufizewafodo.weebly.com/uploads/1/3/4/4/134477277/6046873.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://jugizefabugej.weebly.com/uploads/1/3/4/3/134377355/nateri.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/7a5f9a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449205/normal_5fae628eaa9b5.pdfIn PDF document text
    • https://vegilirebaj.weebly.com/uploads/1/3/1/0/131070576/wozafosiza_pefalix_molevutofasenir.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/92a5d88b-bd13-4a64-96bb-c0b25d49b626/japodubalor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a3e7dd-2c83-44cf-b8e5-98ed8ed8a73a/42649055317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa69c3b7-c61d-4235-ae08-8ac3f45eaec8/mupimumarek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a6b89c-7e89-4dce-8575-4a55a9d63032/sogawufaler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a5590a1-777b-407a-bb57-f2c8370fa928/translate_yiddish_to_english.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCAB 5564 bytes
SHA-256: 555ff0e6367102f8df2dd6af92760e17502a5caf93b86e8c2ca95c50ad69a4c9
font_01_sfnt_off0000cfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA3 10740 bytes
SHA-256: b2b9692abd31cae4bd8a287d51134ea009ba4b197a4bc596be04724e412aef10

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