Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dce537d7ef9781b…

MALICIOUS

PDF

67.1 KB Created: 2020-12-18 08:03:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fd3ffde114e06cdb4ca431010ed59158 SHA-1: b66417b4eb146717c7a62173861933d1d0b4eb54 SHA-256: 0dce537d7ef9781b5efbff03b78efff2247549f9dcad26246a0de1115cf4a1d9
254 Risk Score

Malware Insights

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

This PDF file contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The embedded link directs to 'traffking.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a 'champion high school football schedule 2020', likely serving as a lure.

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
  • 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://traffking.ru/123?utm_term=champion+high+school+football+schedule+2020 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4382420/normal_5fcf2ed862862.pdfIn PDF document text
    • https://kevapesezivobi.weebly.com/uploads/1/3/4/8/134893959/nudoguxaziwemiter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fd64ad07f527.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69223f6-7360-403a-8be2-b66459348dff/21622414394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dea76eb7-ca1d-4696-a2a4-f89e58f52e09/vuzupazasevuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc903b83-e4b0-4c1e-88ce-bf3a51baff4a/pokemon_omega_ruby_rom_download_desm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30d32d4a-b22b-49df-b344-b77b131bee9f/riddle_of_steel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9ddbff-3bdf-4e69-be25-49d85e564ee1/grow_taller_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ad9904-b7cb-4049-bc4b-7f9f9d99b60a/vaganuwodawojaxovaragob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b90167d9-af81-40b1-8f6f-78fb4f6a778a/panda_portable_washer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05617d3d-f4b0-4408-a965-1131e2e3728a/gigabyte_ga-78lmt-usb3_rev._6.0_ma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c6bd935-396e-443d-9643-92c55ee13921/biology_1_study_guide_chemistry_of_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6603cd-640a-4af0-ba1e-946b2f0f4b63/de_decimal_a_hexadecimal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa97c288-f5f8-4ac2-8d34-ec155428fe0b/tatokafogij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd046c3ca23154c95c7046/1606222957943/5_non_living_things_in_the_tundra.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17eeec89e1c4b8fc2a697/t/5fd1df6ec10336458b38ed39/1607589748706/marxism_leninism_vs_democratic_socialism.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_off0000c8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F4 5792 bytes
SHA-256: a60400c643b77a5d820d9652f26bf9972e9638b9dace20dd36279d3f7fd8a4b9
font_01_sfnt_off0000dc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC86 10176 bytes
SHA-256: 8beea5dfd1a40ede0a3ab8a7b452e6095de710d19e4a50e4133623332a6268e3