Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07d3edba8f66169…

MALICIOUS

PDF

70.1 KB Created: 2021-03-22 00:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6ccba1b1720f4cbf2e3b4f0a1f160e21 SHA-1: 9c7d34b62d5d9ca78fa5fc7cd39850423f99f225 SHA-256: e07d3edba8f6616996985b009cc89d50a87d30f48621d9d5d954463a65a2337f
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, but the PDF structure itself facilitates redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://leonvi.ru/wix?keyword=doodle+god+answers+save+the+princess PDF link annotation
    • https://lakupofudeb.weebly.com/uploads/1/3/0/7/130775354/jiriwekesimu.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/TBtKyih/vowixugofamurabutudu.pdfIn PDF document text
    • http://vabetovopux.66ghz.com/rilebabodujome.pdfIn PDF document text
    • https://jeludumekidi.weebly.com/uploads/1/3/2/7/132740852/9463b6c0f6f6.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/gjjojax/extinction_burst_dog_training.pdfIn PDF document text
    • http://biribekagupelu.66ghz.com/suwagosubamabodiwi.pdfIn PDF document text
    • https://xonatusapu.weebly.com/uploads/1/3/5/3/135391421/lumuxenabogu-xalut.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/hepatocellular_carcinoma_adalah.pdfIn PDF document text
    • https://cdn.sqhk.co/zedozomi/jeggieH/74564799927.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/ejjhdjj/22030047517.pdfIn PDF document text
    • http://finofoze.22web.org/pupotisebax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/reludiwikotilasusekomej.pdfIn PDF document text
    • http://tinejamuwaki.epizy.com/18167899877.pdfIn PDF document text
    • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_13dca25bfbf64a9698e551927036bcb5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wofaxil/grade_5_science_electricity_and_magnetism_worksheets.pdfIn PDF document text
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_1d23325669dd435e8004d1fc9039af62.pdf?index=trueIn PDF document text
    • https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_63f36f0675084c4db94cf28e9f22e6d4.pdf?index=trueIn PDF document text
    • http://nenilezum.epizy.com/importancia_da_analise_swot.pdfIn PDF document text
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_e866a59526704bd0985ed4422a32b6a1.pdf?index=trueIn PDF document text
    • http://gujimosodaza.myartsonline.com/how_to_maintain_my_proform_treadmill.pdfIn PDF document text
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_22656d893f344cd9a751962a6fe93595.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/atari_pong_arcade_manual.pdfIn PDF document text
    • http://zogoxuf.atwebpages.com/walmart_tv_trays_set_of_4.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/laxiwodofezoxubagetemaj.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F4 5484 bytes
SHA-256: 94d68ee6339a236081ee5eb8ea476f4acc63ba023ee07dcad38dc1c959e54f78
font_01_sfnt_off0000e6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B5 10564 bytes
SHA-256: 2cbbfdee92b93ae6cf80bf985ab8af40085dde678a651185d61b436841851a51