Malicious PDF — malware analysis report

Static analysis result for SHA-256 033909b1b4532602…

MALICIOUS

PDF

96.4 KB Created: 2021-03-28 15:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6dc2291691a1214c8ad5b812c30f119b SHA-1: 1615b2e5295c906cf6e2a9eb372666f031fd5305 SHA-256: 033909b1b4532602628635f38ab8ca2e1bd5d81d26e2e60294d91f5aedcb11e9
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'business case pdf free download'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/award?keyword=business+case+pdf+free+download PDF link annotation
    • https://jivetigaforivuj.weebly.com/uploads/1/3/4/3/134350389/3d6bc5.pdfIn PDF document text
    • http://vikeman.iblogger.org/camping_merit_badge_answers_quizlet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374185/normal_5fdf283ed4e00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481828/normal_605a7650c33fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459325/normal_5ffd0c2439b99.pdfIn PDF document text
    • https://mitenipup.weebly.com/uploads/1/3/4/3/134363071/f4c2329bb55.pdfIn PDF document text
    • https://xapugugividus.weebly.com/uploads/1/3/5/2/135298581/74699ddf6697d28.pdfIn PDF document text
    • https://beponelife.weebly.com/uploads/1/3/1/1/131164358/edce3f86c7.pdfIn PDF document text
    • http://reassurez-moi-fr.info/kenmore_elite_french_door_refrigerator_ice_maker_not_workinguscnr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_6027354876a3f.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/tupperware_my_sales_web_applicationsb1aa.pdfIn PDF document text
    • https://polatubogo.weebly.com/uploads/1/3/4/5/134598163/goledutixizu-vetesegavifas-dotibub.pdfIn PDF document text
    • http://meetsalle.xyz/madden_16_ps4_gameplayelgvb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454436/normal_604d703d6bf75.pdfIn PDF document text
    • https://kilobabax.weebly.com/uploads/1/3/1/8/131856311/02a67d.pdfIn PDF document text
    • http://blacktea.space/77372557500z6uzp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://begosene.epizy.com/fefimowide.pdfIn PDF document text
    • https://8d2868a3-57b7-484c-81f6-493c1c4f5daa.filesusr.com/ugd/a8ca0f_a9e532a776f64b309d77e5ffc8c5e91c.pdf?index=trueIn PDF document text
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_e6bc07cd04504fc8bc08adfa5a411294.pdf?index=trueIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_c7413a2c7d194d0991061ed549685712.pdf?index=trueIn 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_off00013d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D4E 5288 bytes
SHA-256: b404dceca99fc9d104f22f1dac1bf30e2cd0ba54d80c8af2bc77ee849259e380
font_01_sfnt_off00014f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F72 10860 bytes
SHA-256: 0ce66813b14edbfbb97d97dbfd83a111832c583d6b5087d8a146596955f2fcf8

Open this report in the interactive analyzer, or submit your own file for analysis.