Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec64a0ea9399740…

MALICIOUS

PDF

68.6 KB Created: 2020-11-26 06:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1efd066c6c2f69c2cde1dcf6252d8c5 SHA-1: 1c9827e1648dacb00c5850a1e4e94feb4bccd234 SHA-256: dec64a0ea9399740bfa0581934d12db05c3a821940553515243437d8bace87b4
254 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are part of a link farm and redirector infrastructure. The heuristic firings indicate that these links lead to malicious redirectors and are designed to lure users to phishing sites. The presence of a malicious ML classifier flag and ClamAV detection further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?utm_term=smile+poetry+in+hindi In PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/2dc77dc4f33d7.pdfIn PDF document text
    • https://manonerotorupu.weebly.com/uploads/1/3/4/6/134683358/jutepusax.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/prime_factorization_of_2016.pdfIn PDF document text
    • https://xosuloduviz.weebly.com/uploads/1/3/4/8/134890731/9994392.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/57217541588.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/types_of_editorial_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/amd_a4-_5000_apu_driver.pdfIn PDF document text
    • https://juzowugaf.weebly.com/uploads/1/3/4/7/134773334/xabolewa.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/fewani_nevopoluzej.pdfIn PDF document text
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/7494562.pdfIn PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/9562dde99d.pdfIn PDF document text
    • https://sipelebe.weebly.com/uploads/1/3/4/3/134312525/4704478.pdfIn PDF document text
    • https://ruxapumuful.weebly.com/uploads/1/3/4/6/134682584/lefexewurub.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d8ff1f04-b4c6-4e25-be93-559f010b78fe/viwuzegavumazumarunoji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74449c5c-3edd-4442-8856-b8867f53d299/rijulipefop.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3D 4804 bytes
SHA-256: bdec178c676094d7f76c8d8b664b03ebd873f15dd84ebc3b4af6b10980d7f376
font_01_sfnt_off0000cc51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC51 2024 bytes
SHA-256: 6edd2dc65f8cc0d4bfc465674af3a6957927c9580e196fa1f2ecab0bfce717d7
font_02_sfnt_off0000d5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E7 9768 bytes
SHA-256: 645faf79ef201b927ad7ff5000d212a11b57caa205486ef926abb687747c0006
font_03_sfnt_off0000f73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3