Malicious PDF — malware analysis report

Static analysis result for SHA-256 80fb49577c78c286…

MALICIOUS

PDF

66.5 KB Created: 2020-11-25 11:34:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b00b74b86637c42bec501ce3b8a52d21 SHA-1: 911b4ea526121442b0bd39487985c09c90524a31 SHA-256: 80fb49577c78c286c02678ea53fd74595f51b2f53a7e998c255a9562db389a6e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://traffine.ru/strik?utm_term=7+days+to+die+launch+error', is presented in a context suggesting a technical issue, likely to trick users into clicking. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffine.ru/strik?utm_term=7+days+to+die+launch+error PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426967/normal_5f9a8106f28a2.pdfIn PDF document text
    • https://wijizavop.weebly.com/uploads/1/3/4/3/134309393/4716443.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472221/normal_5fa9eaa34d976.pdfIn PDF document text
    • https://xinufagepowe.weebly.com/uploads/1/3/4/4/134437511/2661fe3d58387.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/dotivaf/vedasurawokoselewijur.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/10442923998.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/sacred_heart_of_jesus_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/96466434673.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/1304046075.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/oklahoma_family_law_practice_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/agathiyar_books_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/grizzly_bear_adaptations.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/pazosetebezejewowik.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/ayane_persona_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/739099ab-8fd7-42e7-9859-8d4a9531a1b0/pusonabilebesitiwu.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_off0000c6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D9 5116 bytes
SHA-256: 59c5cd9e1ad6eef402b00e77158caed2816ed6cd9cbe430857d4f2993c5a15da
font_01_sfnt_off0000d83f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83F 10876 bytes
SHA-256: 7f0158c86bd64e6e4f07f6223f7665a07681b896adbeb23f86d24482321fce22

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