Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f769dc4eeb463b…

MALICIOUS

PDF

79.3 KB Created: 2021-02-02 10:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2633c73e75cd431c41b7a2858c40293c SHA-1: 1fbadf84ceb0595db0771378e0ba88aef7e9f6e9 SHA-256: f7f769dc4eeb463bd791d906722dc7892806d530a64445c3cc1cdea65418bd27
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model assigned a high probability of maliciousness. The document contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing attempt. The presence of embedded URLs and the overall structure indicate an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://jottigo.ru/123?utm_term=las+vegas+outlaws+hockey PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417808/normal_5ff0e0a6a04d3.pdfIn PDF document text
    • https://lurusavi.weebly.com/uploads/1/3/2/7/132710630/gepiziwe.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/femefolubade-jolexixasupa-babeposofa.pdfIn PDF document text
    • http://missunik.space/99473777189zxbfb.pdfIn PDF document text
    • http://idealicaitalia-oficial.site/cvc_word_sentence_worksheetsxp0x3.pdfIn PDF document text
    • http://hh666o.site/julovega6zbz3.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/duxot_lofonad.pdfIn PDF document text
    • http://bigno.space/xovufadipavujotujametooo9g1.pdfIn PDF document text
    • https://zofoxutugutijor.weebly.com/uploads/1/3/0/8/130874595/5a4e43883d.pdfIn PDF document text
    • https://wewiruvikaju.weebly.com/uploads/1/3/0/7/130775929/3c05b70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/nazexifukegefegudewe.pdfIn PDF document text
    • http://fatixoromagik.epizy.com/woteneruzuzoj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69D 5224 bytes
SHA-256: a2433205f3a8f5c4cb574497e26fb109d664bf03fc299335fabe5670aba24d09
font_01_sfnt_off00010885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10885 11672 bytes
SHA-256: bcae13e60cbc2f6b1bb6d4bb8b6654c9a98a13d756f15c9b48f456ce09e46906

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