Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6246e63a6a6813…

MALICIOUS

PDF

51.9 KB Created: 2020-10-01 20:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 153f31d7da33a876407d76aefcdb4bae SHA-1: cec3350143fdc5ab295acea2d88f13b2dfbd2a16 SHA-256: 2f6246e63a6a6813bdd2f9204c182bb5dafc1d97e7ce80996dcd6d57604c1333
184 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 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.
  • 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://gettraff.ru/strik?keyword=motivation+letter+for+job+sample+pdf In PDF document text
    • https://site-1037204.mozfiles.com/files/1037204/75922418287.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/mawalijexu.pdfIn PDF document text
    • https://site-1038815.mozfiles.com/files/1038815/36890334318.pdfIn PDF document text
    • https://site-1036656.mozfiles.com/files/1036656/zifunusu.pdfIn PDF document text
    • http://tejileva.distributivesolar.com/uploads/1/3/0/7/130739090/divopivewaragek-woporunu.pdfIn PDF document text
    • http://files.whatismywear.com/uploads/1/3/0/7/130740465/zeliderixit.pdfIn PDF document text
    • http://newuna.alittlebitoftheworld.com/uploads/1/3/2/6/132695269/nidafodukolonotumul.pdfIn PDF document text
    • http://files.americanbeachtour.com/uploads/1/3/1/6/131637583/zojufaxonomavewig.pdfIn PDF document text
    • http://jadaxesag.jenwalls.com/uploads/1/3/1/4/131406226/7838211.pdfIn PDF document text
    • http://files.bodyprose.com/uploads/1/3/1/3/131381681/4416593.pdfIn PDF document text
    • http://files.socalfitness.net/uploads/1/3/1/4/131407197/5219933.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/45668366229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1740/3557/files/30099763919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0666/9212/files/pojororimomevitutebamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8890/8959/files/48739276116.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 7

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_off00008d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D44 5468 bytes
SHA-256: 5c58475e535a8dd63cfa337ce46023891247c12c7ab11d0ad83a9e77fa1bbdf4
font_01_sfnt_off00009fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD7 10180 bytes
SHA-256: 73db93c4a138a2cea542fd08f50eef5841407fa3fdb07d9bc9723be8cde65ba9

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