Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a30bb1a7f67bf9b…

MALICIOUS

PDF

35.5 KB Created: 2020-11-03 18:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a27d5c6fb93c6406482243a4c7f21ffd SHA-1: 2d4f925d0b68eafc6d083c95a14d5d848b64fda5 SHA-256: 0a30bb1a7f67bf9b86ef34fe9ea1ea291f789e77d910d60605999942431d3f28
132 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a link disguised as a download for 'Yeezus album download zip', which redirects to known malicious infrastructure. The document body itself is heavily obfuscated, but the presence of a malicious redirector and numerous links to disposable hosting strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/123?keyword=yeezus+album+download+zip In PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/tatalivevisodem.pdfIn PDF document text
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/nemomu.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/8150286.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/353343.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/d54f4d96cedca1.pdfIn PDF document text
    • https://jijibaduwa.weebly.com/uploads/1/3/4/4/134495912/270fa297c810af.pdfIn PDF document text
    • https://rizenorugeworo.weebly.com/uploads/1/3/4/3/134379336/8827276.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/lorifawuvawot/villagers_wont_breed_anymore.pdfIn PDF document text
    • https://s3.amazonaws.com/radaruropivoje/johnny_crawford_songs_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/dead_rivals_apk_android_oyun_club.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24bececd-b9d8-4537-9221-e9fb4ab19714/casio_lk_110_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/pafoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/523a6b24-150d-4ee2-b99e-243334c1b659/cuantos_tipos_de_huesos_hay.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_off00004913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4913 5252 bytes
SHA-256: a240ee77d142df01e0bf37350b04c1492a62b630d27409f012995baebc29db19
font_01_sfnt_off00005af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF7 11160 bytes
SHA-256: 4f8cd2d8dbfb0f6ab17f77ef76d4618d777e810e9352c478583b5ff10dcf214d

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