Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec2d8f8400e4994…

MALICIOUS

PDF

54.0 KB Created: 2020-09-30 10:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8a1fa8f300de3df232d8d8e72c77fe1b SHA-1: ddf49c56be4775739244e139b31acf3abc6a6824 SHA-256: dec2d8f8400e4994a64dd95f935c44a05f0355a99799bd0fb4ece68334c37f7e
132 Risk Score

Malware Insights

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

The PDF contains numerous embedded links and a visual download button, designed to trick users into clicking through to external sites. One of the embedded URLs, 'https://ggtraff.ru/strik?keyword=canon+eos+80d+manual+pdf+download', is identified as a known malicious redirector, indicating a likely attempt to deliver a secondary payload or lead the user to a phishing page. The document's structure and link farm behavior suggest it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ggtraff.ru/strik?keyword=canon+eos+80d+manual+pdf+download In PDF document text
    • http://files.pst4y.org/uploads/1/3/0/7/130738814/piwagitasesesuwatug.pdfIn PDF document text
    • http://files.priorityacpro.com/uploads/1/3/1/1/131164424/d629535fe.pdfIn PDF document text
    • http://xasedig.blueribbonhomeimprovementinc.com/uploads/1/3/1/6/131636725/murebo-pedebogi-fezak.pdfIn PDF document text
    • http://files.roundthebayrelayandultra.com/uploads/1/3/2/7/132712551/kesuviwubezun-gixemipaw-lidovofadim.pdfIn PDF document text
    • http://jilerifu.elementalcapital.com/uploads/1/3/0/9/130969971/4943471.pdfIn PDF document text
    • https://site-1037839.mozfiles.com/files/1037839/34692112326.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/41408384624.pdfIn PDF document text
    • https://site-1037077.mozfiles.com/files/1037077/kezarasiloligiwivujosoji.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/18376784313.pdfIn PDF document text
    • http://files.mustbeheaven.com/uploads/1/3/1/3/131380717/loguputuzuvidosekuf.pdfIn PDF document text
    • http://files.omahadeckcontractor.com/uploads/1/3/1/4/131407227/memukalevodisemale.pdfIn PDF document text
    • http://laxota.hisohangers.com/uploads/1/3/2/6/132695471/xakisife-vafiwukub.pdfIn PDF document text
    • http://files.kristofferalbrecht.com/uploads/1/3/0/9/130969424/8258907.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7d824df0-8eed-4ef5-8ab1-8b534d6bf35d/magelunarerajeliseg.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 5296 bytes
SHA-256: d723448fee415e9b67491f2b7a14f6fbb6e36f50995493a270cff0d01dd0e200
font_01_sfnt_off00007548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 15596 bytes
SHA-256: af29ee117dacf7eca9d7753ab4c0522283935bdee709b7ec8b7dada9ef1a6cef
font_02_sfnt_off0000a5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C8 16684 bytes
SHA-256: 4fb18f2f8d176c0c9ddf893a3a69c6eaaaf8ae8309617b6e07033971a2ed751b
font_03_sfnt_off0000bce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCE4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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