Malicious PDF — malware analysis report

Static analysis result for SHA-256 6989f3ae8cefee3f…

MALICIOUS

PDF

90.2 KB Created: 2021-04-07 04:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1b506343aea4666e0de5b81e53363b24 SHA-1: 2bd87a8949277b193f73c8421c3ba439fc1ef10e SHA-256: 6989f3ae8cefee3f3060142843e0c15ea02b46694cac64e720391ff428067ab0
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to disposable hosting and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=how+to+create+traffic+light+status+in+excel PDF link annotation
    • http://rasazajafatirek.mypressonline.com/amniotic_fluid_embolism.pdfIn PDF document text
    • http://ninuwekevap.scienceontheweb.net/83014170250.pdfIn PDF document text
    • http://jofipifemu.medianewsonline.com/tamekolisekil.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/navaresojod.pdfIn PDF document text
    • http://gafegenuwegapok.iblogger.org/algonquin_park_hiking_map.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/xovelivada.pdfIn PDF document text
    • http://viterosogem.iblogger.org/lizavaporuv.pdfIn PDF document text
    • http://tokesuditetu.getenjoyment.net/abject_art_repulsion_and_desire_in_american_art.pdfIn PDF document text
    • http://xonitaj.mywebcommunity.org/76823371877.pdfIn PDF document text
    • http://leporabev.mywebcommunity.org/corporate_magazine_design.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/93cd6689-d851-4f6f-90dd-344cdf5ca365/mutukemaxepix.pdfIn PDF document text
    • http://zesodowiponuse.epizy.com/samsung_rs265tdrs_xaa_water_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/dukuxorojek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9810ef98-5002-4657-82ad-6f5d616e572e/computer_repair_technician_degree_needed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6edf36ae-7cd6-4f8f-a0ff-0b5041d04d0b/karibasugazovab.pdfIn PDF document text
    • http://jadivepijuga.myartsonline.com/dell_laptop_1545_battery_not_charging_when_plugged_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992f2734-27fd-43d8-8b25-5136349e2ab9/health_and_safety_rules_on_construction_site.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/kolevufijakaregibujovon.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A8 5264 bytes
SHA-256: d138b41995e4d7c7c64a776e7be6d38b1e49e63b50df09954f4e3d0726133350
font_01_sfnt_off00012396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12396 6068 bytes
SHA-256: 7a02da73c5ff24218d04b188db7d31ceb9303d5dedd43b645f18a615a19d9b6a
font_02_sfnt_off00013347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13347 11828 bytes
SHA-256: 1c4d0391e8d706cceaf120065ba3a48e020fbd59805aadd7295be05598cea068

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