Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5686ebabea01db…

MALICIOUS

PDF

77.8 KB Created: 2021-03-22 01:26:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3374fc5cd17539a3eaf5679cdefe7576 SHA-1: 15d43d04eeef8c6c06cade1fabd9e5bcec87a09f SHA-256: de5686ebabea01dbb2d2a66b4105d1d278646621714101d9752c6322ffc12fa8
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to disposable domains and known malicious redirectors, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of phishing lures designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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.
  • 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://yafferge.ru/wix?keyword=iwata+neo+n4500+review In PDF document text
    • http://evakuator-uga.ru/6437803533cvgbp.pdfIn PDF document text
    • http://evromotors.net/kitchenaid_refrigerator_ice_maker_troubleshooting_red_light2fygm.pdfIn PDF document text
    • http://gobitujesan.scienceontheweb.net/69802616398.pdfIn PDF document text
    • https://wosiwimobej.weebly.com/uploads/1/3/1/1/131164223/fatokuzinudesavu.pdfIn PDF document text
    • http://maxirem.mygamesonline.org/guess_the_logo_level_500.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/2826245624.pdfIn PDF document text
    • http://busforpay.online/28623870247f7dgg.pdfIn PDF document text
    • https://mowerezudajam.weebly.com/uploads/1/3/5/9/135966589/kolusem.pdfIn PDF document text
    • http://tuxesimufimiti.mypressonline.com/sinhala_alphabet_with_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/biposuba/YejjXgg/jogedojipadopa.pdfIn PDF document text
    • https://cdn.sqhk.co/gasalikuviz/geIGk3Y/rock_pocket_mouse_activity_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/gjEgdZH/merge_rush_z_hack_apk.pdfIn PDF document text
    • https://zavelodenewiguj.weebly.com/uploads/1/3/5/3/135314669/wawef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/how_long_to_heat_thermipaq.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c75d70a0-020e-44f3-aafd-3c7ed9b2092b/craftsman_garage_door_keypad_change_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f93a389-c2cc-46f2-a9b4-6ecbe34a458f/shepherd_the_flock_of_god_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/chromium_for_windows_10_32_bit.pdfIn PDF document text
    • http://zeroxezubanalil.onlinewebshop.net/avantages_allaitement_maternel.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/suxeleded.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/lurekakunowalexitalakoneb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f7d8186-599e-4a2a-b90b-29cebc699141/how_long_should_100_battery_capacity_last.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3479f63-4364-4f89-9cdb-93ce0399eab9/twilight_parts_2_in_hindi_720p_download.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_off0000f545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF545 4912 bytes
SHA-256: 86eb20feabd05d72797357e8ab6a93205e31df03d053af379df3c6edb24c7deb
font_01_sfnt_off0001062e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062E 10324 bytes
SHA-256: 2dd67ff09b77f75354fd884d1f90128f4f6cbc3c95f215aed90e2b69c5e1bb62