Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc38f6ee6278b8e…

MALICIOUS

PDF

73.4 KB Created: 2021-02-19 23:12:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0630706d5dbee79853e5f95d392d5fbb SHA-1: 5c3330385df41e6ce7534e543ff42cf168a80c8d SHA-256: fdc38f6ee6278b8ee38f0c50852d4fa48774bc796260a235966731ab55b08f17
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, with one prominent link pointing to 'http://beruleruz.rf.gd/omr_answer_sheet_100_questions.pdf', suggesting a link farm or redirection mechanism. The primary URL 'https://maypoin.ru/123?utm_term=what+does+acceptance+and+commitment+therapy+treat' is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://maypoin.ru/123?utm_term=what+does+acceptance+and+commitment+therapy+treat PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385862/normal_6002a2787511d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387421/normal_5ff76a47ba925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474989/normal_600642496591c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413455/normal_5fc77176d5ee4.pdfIn PDF document text
    • http://wolorarozuxa.22web.org/anand_movie_mp4_songs_free.pdfIn PDF document text
    • https://robavefozaxun.weebly.com/uploads/1/3/4/3/134379548/f968c9d48b67bc1.pdfIn PDF document text
    • http://jegotaraxipux.iblogger.org/backtrack_gps_app_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475992/normal_602fd5c1e46e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_5fe6c8cbdfdc1.pdfIn PDF document text
    • https://golasirase.weebly.com/uploads/1/3/1/3/131384643/5217974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485698/normal_601d25eb675ed.pdfIn PDF document text
    • https://baxopaparoxiw.weebly.com/uploads/1/3/1/4/131454316/8b7bb92e6fdc.pdfIn PDF document text
    • https://purabadixubemik.weebly.com/uploads/1/3/5/3/135399060/jagunonufov.pdfIn PDF document text
    • https://wifusudufasebo.weebly.com/uploads/1/3/5/9/135992472/fbf65f.pdfIn PDF document text
    • https://daxodewime.weebly.com/uploads/1/3/1/3/131398188/511bfb35771e463.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://beruleruz.rf.gd/omr_answer_sheet_100_questions.pdfIn PDF document text
    • http://sonasekofuxix.rf.gd/41598096551.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/l298_datasheet.pdfIn PDF document text
    • http://dozonexupiwef.epizy.com/89000325241.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D7 5396 bytes
SHA-256: 74efb87980d3c6a901cdd4550a2656b84cfba09a36c269382da98c4bb7b28e42
font_01_sfnt_off0000f418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF418 11376 bytes
SHA-256: 17b5686af09f4c55830b6bf84055b0655ec4f6f51148aedf7997a3111a75d73c

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