Malicious PDF — malware analysis report

Static analysis result for SHA-256 6950777ae952e71e…

MALICIOUS

PDF

69.4 KB Created: 2020-11-29 05:15:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e75ad3663c0a556710b85966ef2c74af SHA-1: b0f4abcfffb0ed385b5e5e13f987d29e5f394704 SHA-256: 6950777ae952e71eebb1bb6ecd309e349b133b9a9faad4c428bc2fa278533d85
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, appears to be a lure related to TV remote codes, which is likely a pretext to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/strik?utm_term=blackweb+universal+remote+codes+for+vizio+tv PDF link annotation
    • https://xexofukirusolim.weebly.com/uploads/1/3/4/8/134871283/012bd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487897/normal_5fbe28268c627.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/fexete.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/138303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404984/normal_5f91c79411ba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413239/normal_5f97bf757dfa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_5fa20b04620d9.pdfIn PDF document text
    • https://fibuwuvonej.weebly.com/uploads/1/3/4/2/134265895/1826444.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/zilanezig_vewovuwowes_vanuzabosivokat_luzagegujebikel.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/95c4fe8b-e7c9-43df-8f76-631ad5e8882e/niloya_tm_blmleri_cretsiz_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9bcb6cb-f732-46b8-a486-ed3db17fd674/gonelitekusudutefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db59ebe-b29d-48d9-89ef-006d95926d7c/diy_foam_glider_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/55044923721.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eef9467-6bf2-4768-9cc3-bc26f5e5889e/melifunokelewipuxigeniwer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af38ef2f-aff6-40c4-8507-fd809b41b24f/pesore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1951b8e6-1959-4b7c-9f5c-d9af0df1146d/62619179271.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/mumanumobukujivibiw.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_off0000d084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD084 5620 bytes
SHA-256: 2589c3b811e6c9d0c9ce5849d2cb58fcbcd851df238c05d36de3fb877c91fbf9
font_01_sfnt_off0000e3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B7 11208 bytes
SHA-256: 28c16f9a0434fd82075f45cdf55f9d477607a21bada5a4633a1bbddd5619b3fd

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