Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7176478cff4b9ae…

MALICIOUS

PDF

49.0 KB Created: 2020-04-02 11:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 5d582981c55cdbb320ddf48754e059e0 SHA-1: c01c39a88eff4ed0164e9661e5765501a5a84ea0 SHA-256: f7176478cff4b9ae8b3169e096ae85e94d6c684ba39f09996ed2503c67d191a1
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on numerous domains, suggesting a link farm or SEO spam campaign. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of direct payload delivery.

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://pbjconstructionllc.com/uploads/1/3/0/5/130539696/130539696.html#dell+e-port+plus+advanced+port+replicator+3+monitors PDF link annotation
    • http://officialdup.shop/uploads/1/3/0/5/130539204/didotagilofup.pdfIn PDF document text
    • http://libertyalabama.com/uploads/1/3/0/6/130604187/beworutamofekimozup.pdfIn PDF document text
    • http://copewithcancer.net/uploads/1/3/0/5/130551374/551d2172.pdfIn PDF document text
    • http://foundmolly.net/uploads/1/3/0/7/130775942/kevonitud.pdfIn PDF document text
    • http://inno-delta.com/uploads/1/3/0/7/130739463/cef0e.pdfIn PDF document text
    • http://jimbettsartanddesign.com/uploads/1/3/0/5/130546717/9668552.pdfIn PDF document text
    • http://jdequipmentsolutions.com/uploads/1/3/0/3/130323818/lipepazem-vefaz.pdfIn PDF document text
    • http://travelismyreligion.com/uploads/1/3/0/6/130640136/1177774.pdfIn PDF document text
    • http://hillcountryhr.com/uploads/1/3/0/2/130289430/laditafamupa_toxatolini_sarozawabogozis_pukogusatokid.pdfIn PDF document text
    • http://realgrowthpartners.com/uploads/1/3/0/7/130775402/f0fb5397e8.pdfIn PDF document text
    • http://lunaparkstudios.net/uploads/1/3/0/6/130604169/kanakivawixe.pdfIn PDF document text
    • http://springfieldmohomeinspector.com/uploads/1/3/0/5/130588858/karizumuvelasobe.pdfIn PDF document text
    • http://fbclee.net/uploads/1/3/0/7/130775116/kisewarewawusabovok.pdfIn PDF document text
    • http://rusticrosebarnweddings.com/uploads/1/3/0/6/130604039/fetabibuvo-ravobunewef-ravolemun-xixiwutiju.pdfIn PDF document text
    • http://iambrianodonovan.com/uploads/1/3/0/4/130476359/a88fa038.pdfIn PDF document text
    • http://inerfazeone.com/uploads/1/3/1/1/131164238/4945a79.pdfIn PDF document text
    • http://burdentransportation.net/uploads/1/3/0/5/130550868/208317.pdfIn PDF document text
    • http://tyleynesgroupllc.com/uploads/1/3/0/5/130588480/dodagumu.pdfIn PDF document text
    • http://hostmaster.thelanguagegap.org.uk/uploads/1/3/1/3/131381055/xuxupafusaramo.pdfIn PDF document text
    • http://loveandlotuswellness.com/uploads/1/3/0/3/130323181/revuwafaf.pdfIn PDF document text
    • http://streakweek.com/uploads/1/3/1/1/131164104/supalajosowexej_tenawaxijek_xamufojilufuxo_butabutud.pdfIn PDF document text
    • http://innovativelearningbydesign.com/uploads/1/3/1/0/131070318/b2b1bf.pdfIn PDF document text
    • http://heartisam.com/uploads/1/3/0/7/130739517/1345577.pdfIn PDF document text
    • http://mylifeonwings.com/uploads/1/3/0/4/130489926/fujebopuwevesu.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://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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE3 8328 bytes
SHA-256: ae81dc3f1ac2614cbc451b6babd9f02f65db75493add4a67adde99651244e017
font_01_sfnt_off00009fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEC 16208 bytes
SHA-256: f304d5248de4d2d535e11e5a3f00133999c598ccb7ee943f2677ab784214679d

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