Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f0ac1a16c277c6…

MALICIOUS

PDF

70.5 KB Created: 2020-12-06 12:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 373de0918b343f73dd7a9776e82756a6 SHA-1: b3a0859d3415fd02b019db4b2a30466f213065b4 SHA-256: 20f0ac1a16c277c667586b128c0b42341fdc1e880be30ceec36c81fdf5773caa
156 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 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://traffine.ru/strik?utm_term=present+worth+analysis+engineering+economics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386837/normal_5f9aec3421153.pdfIn PDF document text
    • https://nesutidixet.weebly.com/uploads/1/3/4/7/134724555/dinujo.pdfIn PDF document text
    • https://goruxevuretu.weebly.com/uploads/1/3/4/8/134851502/9164631.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/migadepowinadovawimo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fcc594842fb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367283/normal_5fc3a8d866a5f.pdfIn PDF document text
    • https://kinijanara.weebly.com/uploads/1/3/4/5/134585029/zumenajen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421462/normal_5f9cfed0e2d93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_5fb27f4d4e80b.pdfIn PDF document text
    • https://sitegevom.weebly.com/uploads/1/3/4/6/134664280/zagijofobuduf.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/5fc10ea416f6d44b07bfaa09/t/5fc6a56e18e72e5fdbc22afd/1606853998883/towebazuwebufopop.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28a899698b02c7f2b0c7e/t/5fc4a3973f75b1664367b05c/1606722456002/25969129683.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc123e317e7202640ebafce/t/5fcbff8d920f47545b7eccaf/1607204750060/51278995078.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc702be8651a047519567d2/t/5fcab8c07fbd1b57c3cb2624/1607121088520/xarolavowixupazade.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6d2f9aa0dc1643a2d70b0/t/5fca4768cf87d0256ff9587a/1607092073465/crazy_racing_speed_racer_mod_apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC880 1884 bytes
SHA-256: 051b06183f80a50b76dc73f610f9c807c708f359a1aaa90f438a7f144d1ce5e8
font_01_sfnt_off0000d15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15C 5408 bytes
SHA-256: 6cd1ec44f61c0d3f6afa1d427dd0e93f5fee14deecd1ebdf6f0cfff8d30bccb5
font_02_sfnt_off0000e3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B7 11440 bytes
SHA-256: c66b5d817c1ae6a4d74b9e140b56de9fae589e827ab3edccc2410393462e19a6

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