Malicious PDF — malware analysis report

Static analysis result for SHA-256 328623fd5e6125ab…

MALICIOUS

PDF

68.4 KB Created: 2020-12-20 08:55:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7d42ea4b1d3a760365a2dc263f8fe46c SHA-1: b6fefc3f70567f0886ec7afe3426c9847ee6e6ed SHA-256: 328623fd5e6125abf1a5855541b48d4a4aae9806c6a341db8f7877b5e56dbcae
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, many of which point to other PDFs, suggesting a link farm or phishing attempt. The primary URL, 'https://trafffi.ru/123?utm_term=hay+day+unlimited+coins+and+diamonds+apk+free+download', directly advertises a free download for a game cheat, which is a common lure for malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=hay+day+unlimited+coins+and+diamonds+apk+free+download PDF link annotation
    • https://sebonegipuwi.weebly.com/uploads/1/3/4/1/134108682/c0009c5538aa3.pdfIn PDF document text
    • https://fabidarupevonu.weebly.com/uploads/1/3/4/6/134620419/jibifij.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/c7b4c48a3.pdfIn PDF document text
    • https://muzavixoro.weebly.com/uploads/1/3/4/6/134647253/7810875.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/dofasogir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1b3a916f6d44b07c461c5/t/5fd2010af2ee360040fe1c6c/1607598346212/35695527297.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6d72b0d716e027b00323d/t/5fcc7765f94b6402b213318f/1607235430340/povet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf553ca97599144eee4ae3/1606374718158/linevajefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26a46e4b-9855-4043-b42d-04fd31908fb3/wexevifubopip.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3d0288139af0376575e17/t/5fc985652e4d7f67ca212cad/1607042406666/field_hockey_meaning_in_marathi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/020a0bf8-4b64-4a22-8491-4be143ee0626/15062825433.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde7b11617c13787ca3ef9c/t/5fde83dbd85ca26442036aca/1608418267130/formule_pour_calculer_tva_sous_excel.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_off0000cdd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD3 5520 bytes
SHA-256: f67d27ad923ad12ecadfd6085260b6c931c2fdac4cab722687848ebbc25b6cff
font_01_sfnt_off0000e09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09B 10556 bytes
SHA-256: b8429a6167d6795b28a00660c631f29968659a2b8be2464acbe29d3f19d47fc7

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