Malicious PDF — malware analysis report

Static analysis result for SHA-256 deff084f6820a7c0…

MALICIOUS

PDF

37.9 KB Created: 2020-10-05 00:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f39479d458dd9fc8c90c2318b797d0a6 SHA-1: 94a983ec8ecba7503ceb3364b66017be6e18dc59 SHA-256: deff084f6820a7c00d9d93150b43572f1dc077f5a7b4bc7ea25662351c4a94e4
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://ttraff.club/pify?keyword=zeus+drawing+step+by+step In PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/58011096330.pdfIn PDF document text
    • https://site-1038753.mozfiles.com/files/1038753/62073138712.pdfIn PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/tiriweb.pdfIn PDF document text
    • https://site-1037276.mozfiles.com/files/1037276/76488709618.pdfIn PDF document text
    • http://xefopu.charlenemosley.com/uploads/1/3/1/4/131438044/naxililer_remepavukuvate_jimigojovuke.pdfIn PDF document text
    • http://files.kidshammer.org/uploads/1/3/2/6/132681836/mipoxu.pdfIn PDF document text
    • http://files.flycatchertravel.com/uploads/1/3/1/0/131071231/konejafulonexejanef.pdfIn PDF document text
    • https://site-1043239.mozfiles.com/files/1043239/79530595208.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/munisixupojibuginedeno.pdfIn PDF document text
    • https://site-1037886.mozfiles.com/files/1037886/52392791116.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/a292aba2-9220-4c75-8a8d-002d04398fc3/90866668123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/183a477f-11ae-459f-9865-2bf4df012582/wofifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f8a3ec-a539-4a07-aa19-91e2fa349e47/12195683325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff23399c-aa47-4d72-8414-521c97f26b1f/50830096295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d3f574d-5fc2-4cfe-9fd1-3d55c84f5a15/likopevibemomubitesoxa.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_off00005758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5758 5384 bytes
SHA-256: 0ff3b9d3b707ffd5f8b03b65526ee563e37777bff29e92bad58826885bf0b621
font_01_sfnt_off000069c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C9 9836 bytes
SHA-256: aa97f03dae21793d82c25a240306f8b9373a390c0b95aff94190668ce6f8e4f9

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