Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1faecd78444a26…

MALICIOUS

PDF

77.1 KB Created: 2021-03-30 10:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3cff0f9c9f856dbbb3fcd876ecb183f SHA-1: 786cadd981093dd721fa2e748067285fe88003f0 SHA-256: 0f1faecd78444a26492d760091b68520404089146befe36788839b897c10055e
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to reference a Logitech remote, suggesting a lure to trick the user into visiting the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=logitech+harmony+300i+remote
    • https://cdn.sqhk.co/lidupusumoj/Oij1ggq/auto_reply_email_sample_leave.pdf
    • https://cdn.sqhk.co/manuguwe/fdNhfjh/wuzorifapedurafexaxa.pdf
    • https://cdn-cms.f-static.net/uploads/4387226/normal_5fd1ce9f5f701.pdf
    • http://italiahot.space/lurewor9bvh.pdf
    • https://cdn.sqhk.co/xagegegozi/ahjnjjY/11944999848.pdf
    • http://sell-toclick.online/9457298571422pqn.pdf
    • https://cdn.sqhk.co/munenetifu/e0ialG3/95188164200.pdf
    • https://static.s123-cdn-static.com/uploads/4384144/normal_5ff7602049e31.pdf
    • http://bluebadgeapproval.com/detugurijtbc1.pdf
    • http://tumbochka.space/duzidogaganemaj90.pdf
    • https://static.s123-cdn-static.com/uploads/4381347/normal_5fe45c0c4ca2e.pdf
    • http://topdiscount.pro/life_and_death_in_shanghai_book_review9miaz.pdf
    • http://gatorama.space/2447101067c6mqm.pdf
    • http://design-kvartira.info/kujezegevonemi8jpbo.pdf
    • http://adv-workshop.site/sons_and_lovers_theme_analysisdgmnd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fc987752-a84c-42fc-a24d-fa03b4dfc804/what_temperature_to_dehydrate_deer_jerky.pdf
    • https://uploads.strikinglycdn.com/files/8a65cef9-5fce-48ca-ae84-67b67283b684/fuzuwazufog.pdf
    • https://uploads.strikinglycdn.com/files/9dfe64ca-fc1a-4873-8aac-6caae4a395c0/23986532178.pdf
    • https://uploads.strikinglycdn.com/files/e3dbced0-d761-4b9b-b185-4287bac0fcaf/melumusomixute.pdf
    • https://uploads.strikinglycdn.com/files/6654b9ed-3c0e-4bb4-a950-3033f80b94c8/dojejulajamovunezanefe.pdf
    • https://uploads.strikinglycdn.com/files/0bd0bf66-10bb-4fde-93c0-911230450cb3/how_to_get_thinkorswim_on_mac.pdf
    • https://uploads.strikinglycdn.com/files/6839b199-b369-4f36-a90b-b9e6f8017da5/90977572097.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a2.bin
7ab6715725e2ff271a02a443ea47565b15a0c6990108995329fd3b23349d413c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 5352 bytes
font_01_sfnt_off000102be.bin
330b6027a498ff19575b6e3b9b9fa6877db5e5c480f7531833f997932cd3b37e
pdf-font-stream PDF embedded font (sfnt) at offset 0x102BE 10732 bytes