Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec245dfd6bae9d29…

MALICIOUS

PDF

42.4 KB Created: 2020-10-10 23:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fe3e9cca2d8694eb8bd49fc05213ea03 SHA-1: 288a12815112e7cb0860d8218ae050701feb4782 SHA-256: ec245dfd6bae9d290bbe29b439cea00eba967f1af91a9df31dc4ca22382304fe
124 Risk Score

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.com/pify?keyword=leica+m2+manual In PDF document text
    • http://files.stitchedwithcare.com/uploads/1/3/1/3/131383624/dowumi-wefudazebukop-wivavin-tajewowe.pdfIn PDF document text
    • http://lixiva.victoriaharbourfestival.com/uploads/1/3/1/4/131406390/2a560c379a6e0e3.pdfIn PDF document text
    • http://xuxaja.michellesee.com/uploads/1/3/1/6/131606490/3308576aaf40.pdfIn PDF document text
    • http://files.caribbeanwesleyan.org/uploads/1/3/0/9/130969573/1403205.pdfIn PDF document text
    • https://site-1037125.mozfiles.com/files/1037125/7448851339.pdfIn PDF document text
    • https://site-1039757.mozfiles.com/files/1039757/vojopewase.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/19a14d76-e9fe-4f41-bf87-1c671df12d46/rizelaxigevazoxefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/022e63ff-32eb-4407-8e29-dad3f6fe9e44/lazebowep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e91b667-ed10-4e45-8cbc-1cd3a5ec93ac/86793778735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39edfe42-0ca3-4de7-be41-8c6bc49e7820/kabakufuvedigokejegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/766_credit_score_any_good.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2002/7557/files/lajeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1367/files/liquid_glass_polish_vs_ceramic_coating.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_off00006270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6270 4744 bytes
SHA-256: 789a94589120626ed91da2eb6ff8e4d788fabd1c963d69c63ccea552b6dbe5dd
font_01_sfnt_off00007283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7283 13536 bytes
SHA-256: 5a3367f65678b4eefbefd2689523ae7fbcf54aa97397517ef1fd8463fa3c2d41

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