Malicious PDF — malware analysis report

Static analysis result for SHA-256 08598e82129172ad…

MALICIOUS

PDF

76.6 KB Created: 2021-02-25 19:09:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: cb041404c01159c095f66b606245546a SHA-1: b3433017792586b8576df3a13c6f1938e73c64f5 SHA-256: 08598e82129172adb0834146ad5a9fffea24d69d4fb58afa28cde825dcee66f0
94 Risk Score

Malware Insights

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

The PDF document contains embedded links that point to known malicious redirector infrastructure, specifically 'crophysi.ru'. The document body, though heavily obfuscated, appears to be a lure related to a treadmill manual. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 3

  • 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.
  • 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://crophysi.ru/wix?keyword=proform+995+sel+treadmill+manual In PDF document text
    • http://testertumentum.space/31088438569t720v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_6011229b264c1.pdfIn PDF document text
    • https://cdn.sqhk.co/lemijexo/ghbjfhi/momo_s_dressup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_601a9bc600ff7.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/jche6hf/journeys_interactive_series_mod_apk_unlimited_tickets.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/hgUlhfF/10038666533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413007/normal_6035afc3f2f33.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/nexotuxebakiratogatotij.pdfIn PDF document text
    • http://cucoupon.info/surijuriroludojejezs7nh1.pdfIn PDF document text
    • http://prizinsta365.site/1559029907cmpv3.pdfIn PDF document text
    • http://remont-kholodilnikov.website/mepixaleburqk9z.pdfIn PDF document text
    • https://cdn.sqhk.co/zirixegip/ff4TLQi/navy_blue_frog_tape_wall.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478398/normal_6024aa693d6e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402712/normal_60243a8b900d9.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/yFheyqp/kanto_pokemon_tier_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/pipam.pdfIn PDF document text
    • http://zepizevut.atwebpages.com/pebexesurikoziwawema.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/jidojabamunemebomes.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/wutisarif.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/deritodisivosejarife.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/american_college_of_gastroenterology_acute_pancreatitis_guidelines.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/mass_effect_andromeda_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/19902585268.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 5332 bytes
SHA-256: c09fdc2ebd7de46a985999caf2f86c2adcabea110f9c43a1c5dc49c849b890b5
font_01_sfnt_off0001013c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013C 10468 bytes
SHA-256: a4fafd57552fe2adfa9f46cdc09e4d99271af8888c62d6a6a09dd50b132ffab0

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