Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e3d0ae98a67c2b…

MALICIOUS

PDF

42.7 KB Created: 2020-10-09 04:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e97ab8cdd7d3831ac0b8b54884409212 SHA-1: 67202ef7e167adb3ca08f374f0f2e778326e4c78 SHA-256: f3e3d0ae98a67c2bb6fdc7ba18a89ea91b0f66743c137d51b12141863fddf86f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document was flagged by a machine learning classifier as malicious and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, and another noted a link farm on disposable hosting. These findings suggest the PDF is designed to lure users into clicking malicious links, likely leading to further compromise or phishing attempts.

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://ttraff.link/pify?keyword=spongebob+memes+clean+fortnite In PDF document text
    • https://site-1037026.mozfiles.com/files/1037026/jemuzovozo.pdfIn PDF document text
    • https://site-1039491.mozfiles.com/files/1039491/raduwijetuj.pdfIn PDF document text
    • https://site-1038460.mozfiles.com/files/1038460/gonopewaw.pdfIn PDF document text
    • https://site-1040341.mozfiles.com/files/1040341/80858267997.pdfIn PDF document text
    • https://site-1044113.mozfiles.com/files/1044113/kelesokivij.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/libefapaj.pdfIn PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/nasirajixuxazipe.pdfIn PDF document text
    • https://site-1036985.mozfiles.com/files/1036985/kawupiripobisagamogajojur.pdfIn PDF document text
    • https://site-1036781.mozfiles.com/files/1036781/wifixejenunusokun.pdfIn PDF document text
    • https://site-1039651.mozfiles.com/files/1039651/pefupija.pdfIn PDF document text
    • https://site-1036902.mozfiles.com/files/1036902/49521616244.pdfIn PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/449114205.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/56d8e241-8474-4c63-a4e0-9e9d9ecbc268/vekozakuxomotokawamudasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c003e42a-8f16-4b88-a6a8-0880300aa3c7/kedibodotiwugazageb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5d6816-4226-4537-b519-01156da2fcfb/fanopiduxibekexuzotaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f8a0be4-b4ac-4be0-8ef6-a6392ebe1a90/99269805786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e2ebf0-bebf-4548-8bb5-d69cf8def37b/dirosom.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_off0000662b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662B 5580 bytes
SHA-256: e44516f565e9f48c0560d09c91f401a8b7d069d49bb56d1b9d6b942302d23081
font_01_sfnt_off00007919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7919 10880 bytes
SHA-256: 24953f2862c55635e1f585123ae855afe3d86651a33a0b60b2bea8a8e9b12cef

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