Malicious PDF — malware analysis report

Static analysis result for SHA-256 a28f1c8c3864f7f7…

MALICIOUS

PDF

44.2 KB Created: 2020-09-29 00:35:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 032f5536db5d288bb0c86f9907c2bae5 SHA-1: 3d5a75f36e4274d99556c82681f6a2235d76bebd SHA-256: a28f1c8c3864f7f78d1e996696019dc4d7843a1d7a51bc338f23b00013564f4c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://gettraff.ru/mozel?keyword=gujarati+calendar+november+2019+pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to a calendar search. The ML classifier also strongly indicated maliciousness. This suggests the primary goal is to redirect the user to a malicious site.

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://gettraff.ru/mozel?keyword=gujarati+calendar+november+2019+pdf In PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/30098876909.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/21200303239.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/40294936788.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/35613240357.pdfIn PDF document text
    • https://site-1036800.mozfiles.com/files/1036800/lezefojaxulidif.pdfIn PDF document text
    • http://files.jontigert.com/uploads/1/3/1/0/131071145/sixapulikudujo.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/15845413371.pdfIn PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/92825057905.pdfIn PDF document text
    • https://site-1036685.mozfiles.com/files/1036685/lepexabinugavita.pdfIn PDF document text
    • https://site-1037113.mozfiles.com/files/1037113/58320483091.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/rikababiposi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/walegutuwemalajudoluxula.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E54 5912 bytes
SHA-256: c924ccfe78a2c61136c61f3138c755a6d91e75d39dcd7be939847c1d54f10bd7
font_01_sfnt_off0000726f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726F 4568 bytes
SHA-256: 5a4142ba8f900b5d141b0aa9d1ca31ab699d463e983bdfdebcd5ce8e9cf81ad0
font_02_sfnt_off000080f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F9 10164 bytes
SHA-256: 63f9ec5b42264bdf2b0442c34c2c2721e7a8699a3ef176bf1c6d529b5c6845ab

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