Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cfb74730a407a9f…

MALICIOUS

PDF

84.9 KB Created: 2021-03-20 04:44:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 314e4c9ecec18aae69763319d30a6e7f SHA-1: 3a3aa9392b255f0668b20b8c0e13c2f5160510af SHA-256: 8cfb74730a407a9f4c779c2f2fb9aa071ebb44796dab1ad4021216f4a0d9ff5a
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of an SEO link farm designed to appear as legitimate search results. The primary malicious URL, https://maypoin.ru/award?keyword=ancient+cities+of+indus+valley+civilization+pdf, is presented as a download for a PDF related to ancient civilizations, which is a common lure for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely related to driving traffic to malicious sites or distributing further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/award?keyword=ancient+cities+of+indus+valley+civilization+pdf PDF link annotation
    • https://jukosixosibi.weebly.com/uploads/1/3/1/8/131871462/551b37.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/adobe_reader_pro_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/wafevurizew.pdfIn PDF document text
    • https://ziruxirunilexa.weebly.com/uploads/1/3/0/7/130775543/6141283.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/38231148273.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/first_grade_math_worksheets_printable.pdfIn PDF document text
    • http://jiludedo.iblogger.org/97000457161.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/woxipedaz.pdfIn PDF document text
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/domivew_giwexe_vazibiwapam.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/95536349360.pdfIn PDF document text
    • https://nusuxoxoli.weebly.com/uploads/1/3/2/7/132710665/luzifodidogavuwegiz.pdfIn PDF document text
    • https://rujafamuzesoka.weebly.com/uploads/1/3/5/3/135339602/582c54975f408e8.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/vezevufuzibotatenudog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0aed7b51-d02b-4864-a6bb-b478bb809667.filesusr.com/ugd/fbdaab_3dad0d3fac2e4a8ca59ce74bd34d0549.pdf?index=trueIn PDF document text
    • http://kesugonapopuw.epizy.com/lubega.pdfIn PDF document text
    • http://weguxuwe.epizy.com/what_are_the_types_of_relation_in_function.pdfIn PDF document text
    • http://jozixal.epizy.com/73723393825.pdfIn PDF document text
    • https://d670dda7-df53-4ef1-8eda-d3256df28744.filesusr.com/ugd/dbbbec_5b6227f08b3543b3947a66bc50034c42.pdf?index=trueIn PDF document text
    • http://xejolufu.epizy.com/reinforced_concrete_design.pdfIn PDF document text
    • http://nufurezoguboli.epizy.com/66580247284.pdfIn PDF document text
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_ff817f94d9524728a4051d96dc26ab3f.pdf?index=trueIn PDF document text
    • http://bixogonabu.epizy.com/apple_after_hours_earnings_report.pdfIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_9d742c8a4c254d9dbeff3763b8166bda.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

Related samples 4

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_off0000ff12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF12 3396 bytes
SHA-256: 46e83c0167423b768be69e7107f4ec7c2990a63918df32803fae564d255dfed7
font_01_sfnt_off00010b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B21 5256 bytes
SHA-256: d57e130421d93d487cfd68d1573fbe90f714aed701965fba6f25728762213bc9
font_02_sfnt_off00011d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D36 12308 bytes
SHA-256: 03eaca7033be285798902fa11b9cdb78ae9df11a28cc193d8028bb08b37d6bbb

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