Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5e0314e91e3948…

MALICIOUS

PDF

78.1 KB Created: 2021-05-10 21:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 23d662c4f1183c7cdc4ac55ad45d90ef SHA-1: 73463a993ecb8370b0d347fd146d81cfbca08a8d SHA-256: fa5e0314e91e39485f165207cf67592b44828fd4d7bf4d5286da5cec8078b53d
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or redirection mechanism to host malicious content. The document body, though partially obfuscated, mentions 'How to use turtle beach xo four on pc', a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://lozipotod.ru/strik?utm_term=how+to+use+turtle+beach+xo+four+on+pc PDF link annotation
    • http://pawusewi.sportsontheweb.net/anime_characters_birthdays_in_march_12.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/namivuxuvazijutiwolerov.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/18967429792zbkwx.pdfIn PDF document text
    • http://kunozoxutokusu.mygamesonline.org/54185898871.pdfIn PDF document text
    • http://bozesedixek.mywebcommunity.org/bass_guitar_for_dummies_full.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_5fd916c197a57.pdfIn PDF document text
    • http://carbackseat.site/10075909875wrbjr.pdfIn PDF document text
    • http://towonededuv.medianewsonline.com/full_bhagavad_gita_in_telugu_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387562/normal_605f9d789b4c8.pdfIn PDF document text
    • http://videohost.space/what_is_in_the_gravity_falls_journalo3lhn.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/adobe_photoshop_cc_2020_tutorial_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_601339877b82a.pdfIn PDF document text
    • http://naturelofo.mypressonline.com/bv_raman_books.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/relative_clauses_worksheet_for_class_8.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://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_073daa2397034d7eba733c3018dbb756.pdf?index=trueIn PDF document text
    • https://de2a8dfc-dc8d-4d62-be3b-f97abdd17bf6.filesusr.com/ugd/c722c2_434bbdff080d49ad860b06f46d6c041d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f4fb75c-664d-4914-9ba0-4e0388967ee8/adobe_premiere_pro_2019_crack_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3754a056-83a2-4e1f-9bf4-5f7f5e718bab/vewagedepivesupalibi.pdfIn PDF document text
    • https://f3ea461b-95fd-44cf-949c-5afda193840f.filesusr.com/ugd/a48928_6fc841b82dc94565b44267f5e69b1b73.pdf?index=trueIn PDF document text
    • https://65de77fc-0341-4fd2-89b2-cd6b005a91de.filesusr.com/ugd/cf79db_a788a34f97694667875886b89450476a.pdf?index=trueIn PDF document text
    • http://mojigoka.atwebpages.com/48853353644.pdfIn PDF document text
    • https://ef2e072a-e8a2-4438-804d-cc750be2e2f6.filesusr.com/ugd/6a22cb_d7c0f397d7624d299267b2a63809e4c6.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4D 5196 bytes
SHA-256: e018f6dd4a3c9021f2452bb2eb96d49e85a10953904b9b1fcac9e9325abbe6c6
font_01_sfnt_off0000f107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF107 13448 bytes
SHA-256: a8d52448d4f3e0f1bf8f684358ef1f6e379e8f2844f798d982e4cf95581ee083
font_02_sfnt_off00011cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f