Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba26a610dc13d8f…

MALICIOUS

PDF

73.1 KB Created: 2020-03-22 10:11:10 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 43a2b33c70d7e6094b4d45d69dc623ae SHA-1: 8ba88a856b28797a0a8e913b9a7d8d769284dc8a SHA-256: fba26a610dc13d8fd2747bb03cd67469f435e84a22e2a02b63705e71d205aceb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The embedded URLs are likely intended to direct users to malicious content or phishing sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://vf-pkb.ch/uploads/1/3/0/3/130313252/130313252.html#tepito+arte+aca+historia PDF link annotation
    • http://eirljouyromain.com/uploads/1/3/0/4/130488584/dadowev_sezulovilopa_sofexinuzan_tezepi.pdfIn PDF document text
    • http://celebritiesfakes.porncolection.com/uploads/1/3/0/6/130640119/5667991.pdfIn PDF document text
    • http://www.nordby-toyen.no/uploads/1/3/0/3/130379527/xewamo.pdfIn PDF document text
    • http://michaelkeithwelch.com/uploads/1/3/0/6/130604803/kirusu-vavepedodavobi.pdfIn PDF document text
    • http://www.adrianaarias.com/uploads/1/3/0/5/130545818/4710211.pdfIn PDF document text
    • http://obertoelectric.com/uploads/1/3/0/3/130379204/2925947.pdfIn PDF document text
    • http://ommammayoga.ca/uploads/1/3/0/3/130312929/zuxonevonobezibeg.pdfIn PDF document text
    • http://maxro.kiwi/uploads/1/3/0/7/130738727/8771925.pdfIn PDF document text
    • http://onehundredrobotslab.com/uploads/1/3/0/7/130739147/nunelobamunut-garolaxuneruruk.pdfIn PDF document text
    • http://melatonindreams.com/uploads/1/3/0/9/130969817/tepir-gaditenive-koguzedudot-rasav.pdfIn PDF document text
    • http://notsumacapital.com/uploads/1/3/0/7/130775633/temalog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF61 11008 bytes
SHA-256: 973f89d99e87976a9a3fe859154600239cfd4e73ebfafd66f92b2a7eb0e5ce9d
font_01_sfnt_off0000f5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EE 2732 bytes
SHA-256: 4cda5f785b161ab6df9682e6368fd2c101e9aa902a3f31947a361fc50cf1a95c
font_02_sfnt_off0000ffa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA5 16208 bytes
SHA-256: f304d5248de4d2d535e11e5a3f00133999c598ccb7ee943f2677ab784214679d

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