Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b162437a34c7b3…

MALICIOUS

PDF

36.3 KB Created: 2020-10-07 06:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 80d4e5930bece206a96a3c10c13de84f SHA-1: 50c23f477230ef14f2d684c481959fde1b493157 SHA-256: 79b162437a34c7b3dc940e89115c26e272596656d5d001c24449cbeb1d5fd941
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://ggtraff.ru/strik?keyword=atkins+physical+chemistry+solutions In PDF document text
    • http://files.froshcab.com/uploads/1/3/1/4/131437889/02a5ca47.pdfIn PDF document text
    • http://files.uniqueherbalcreations.com/uploads/1/3/0/7/130776099/modoxovabukoso.pdfIn PDF document text
    • http://files.louisebennettcopywriter.com/uploads/1/3/2/3/132303175/pisagapufotixefov.pdfIn PDF document text
    • http://zikamat.ppcomachining.com/uploads/1/3/1/3/131379103/gumowilemabavew-vopapusi.pdfIn PDF document text
    • http://files.yourlocalmidwitch.com/uploads/1/3/2/6/132695476/fefovidomiponale.pdfIn PDF document text
    • http://jazuf.handsonhexham.co.uk/uploads/1/3/1/4/131438161/bb54ccbb9d217a.pdfIn PDF document text
    • http://duwerawe.robertberman99.com/uploads/1/3/1/0/131070213/beb63b.pdfIn PDF document text
    • http://soleriza.rescuecandlewoodmountain.org/uploads/1/3/2/7/132741508/9d745b23.pdfIn PDF document text
    • http://files.captiv8designsusa.com/uploads/1/3/1/4/131454106/7289005.pdfIn PDF document text
    • https://site-1039268.mozfiles.com/files/1039268/lefefupinigodutafoso.pdfIn PDF document text
    • https://site-1037075.mozfiles.com/files/1037075/pigusojefirawasixuju.pdfIn PDF document text
    • https://site-1038572.mozfiles.com/files/1038572/90168445090.pdfIn PDF document text
    • https://site-1048245.mozfiles.com/files/1048245/julowuzapabefozus.pdfIn PDF document text
    • https://site-1037205.mozfiles.com/files/1037205/4413498658.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/1/0484/3791/9902/files/lufkin_high_school_phone_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/28367458261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3820/4053/files/morazin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/makupinotituzumorezun.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_off00004fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE6 5328 bytes
SHA-256: 73a41fa299c9071b9f05e239f408f93b987aed5ba8e25f36b68e62a22ed935ab
font_01_sfnt_off000061e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 10076 bytes
SHA-256: 59f65b6c5f6f533d352d8c9f17dbd71c8b36505b386cb48689729e4b83beb66b

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