Malicious PDF — malware analysis report

Static analysis result for SHA-256 2918dc5fbe429aed…

MALICIOUS

PDF

50.6 KB Created: 2020-10-06 15:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 15648888739c9c6be01c85126e0a3f8f SHA-1: 9217236cb10c5d322353e8459e8b431f1f381356 SHA-256: 2918dc5fbe429aed58d4e9bfa7e0f3a794c00a87e08d5f06505cf2bad7024ebb
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=movimiento+rectilineo+uniforme+y+uniformemente+acelerado+pdf In PDF document text
    • https://site-1038493.mozfiles.com/files/1038493/37941003889.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/malanut.pdfIn PDF document text
    • https://site-1043373.mozfiles.com/files/1043373/nazobo.pdfIn PDF document text
    • https://site-1039438.mozfiles.com/files/1039438/kolujuf.pdfIn PDF document text
    • https://site-1039533.mozfiles.com/files/1039533/93960292738.pdfIn PDF document text
    • https://site-1038898.mozfiles.com/files/1038898/tevifixaganibuditefalit.pdfIn PDF document text
    • https://site-1039274.mozfiles.com/files/1039274/wutowufudelobebulit.pdfIn PDF document text
    • https://site-1038401.mozfiles.com/files/1038401/15859495991.pdfIn PDF document text
    • https://site-1040785.mozfiles.com/files/1040785/xizusirekubifulewipolanej.pdfIn PDF document text
    • http://pomoj.anaturalselectiongsd.com/uploads/1/3/1/4/131453674/gikujevuzuvike_lisewi_badadajurudob_detug.pdfIn PDF document text
    • http://files.dogwooddoodlebugs.com/uploads/1/3/1/4/131406843/307724.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/824e355b-b711-4063-8a2e-0284aa69c3af/13157469257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0211c5a-e616-4833-887d-9ff932a91e60/56278555806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/240df4c4-7171-4f73-8a43-eb0572667685/78140053876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29fdfc81-f792-4185-9ad1-873291dbcde3/rawixop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64c14cf-3461-497d-93af-b6a39293f6aa/nodozokerukudigulodofusan.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000603d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 5172 bytes
SHA-256: 802d9b435ec3ce7aea20dcd035c07d27f1a04e657342aeea2d9216e41bc7e27b
font_01_sfnt_off000071ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71CE 12996 bytes
SHA-256: 9cbc7f8d2cf734c6800d58a96d499c8364ecb0c3f2c3358be6e07df958d48708
font_02_sfnt_off000099e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E0 16060 bytes
SHA-256: 2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357
font_03_sfnt_off0000ae74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE74 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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