Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa9bec43774d78b6…

MALICIOUS

PDF

34.2 KB Created: 2020-10-12 09:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6381962f514dbd277db7adc2be33cfd8 SHA-1: a0d416d3e7672e164db3fe9f40691a3c993876c0 SHA-256: aa9bec43774d78b6757d8ae45e14d7335759f4e49fcd32be1ff2d7bdb47d0034
132 Risk Score

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://ttraff.club/pify?keyword=autocad+manual+2007+pdf In PDF document text
    • https://site-1042092.mozfiles.com/files/1042092/2595364569.pdfIn PDF document text
    • https://site-1037075.mozfiles.com/files/1037075/24303268959.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/liwuramirekiji.pdfIn PDF document text
    • https://site-1038492.mozfiles.com/files/1038492/mitufas.pdfIn PDF document text
    • https://site-1043257.mozfiles.com/files/1043257/xovelalodinojatiri.pdfIn PDF document text
    • http://files.bahai-neuchatel.org/uploads/1/3/1/8/131856068/lowelig.pdfIn PDF document text
    • http://mokubuf.backyardswag.com/uploads/1/3/0/8/130874583/denexijomawub.pdfIn PDF document text
    • http://files.kahua-ranch.com/uploads/1/3/1/3/131384709/jodaxu.pdfIn PDF document text
    • http://files.chesneefb.org/uploads/1/3/0/8/130874620/vematop.pdfIn PDF document text
    • https://site-1036697.mozfiles.com/files/1036697/8035742988.pdfIn PDF document text
    • https://site-1039132.mozfiles.com/files/1039132/nosakir.pdfIn PDF document text
    • https://site-1044062.mozfiles.com/files/1044062/ludetedixukodamizer.pdfIn PDF document text
    • https://site-1043959.mozfiles.com/files/1043959/40737196697.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/bb8c9ec5-fbf2-486e-a779-d507dac6ff7c/54783006662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b01920-68b9-4fcc-ac45-9536a3e8b02a/mesasuvoserezewofev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d6a0b6-aab6-465d-a894-27bac3787cca/42700585557.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/958028e0-8dea-4737-901c-c0eb772f5148/10519443909.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_off00004ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB3 5372 bytes
SHA-256: 20a709434d36e9a79d605557eb2ff423871f9fa2d7bff913f1692ce73bfbf070
font_01_sfnt_off00005cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEE 9232 bytes
SHA-256: 39afd01882d44d98d9901f08be880bf43adce1cf9a46060ff39e83f6aa515896

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