Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0130ff31078a78d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-06 21:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c3e3a431be106b6e26e54af426eece29 SHA-1: e8fb593b0ac6f1b9d088ff599fc8ef1a06b60fcd SHA-256: e0130ff31078a78d92456f2e61045779c27652b52087346d1e95ab7728d1456c
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or redirector infrastructure, indicating a phishing or malicious content distribution 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 a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/strik?utm_term=onkyo+tx-sr608+manual In PDF document text
    • http://good-production18.site/46106278860bqmos.pdfIn PDF document text
    • http://winoorama.website/emergency_severity_indexdz290.pdfIn PDF document text
    • http://dream-stat.ru/slideshare_er_apk2yc3a.pdfIn PDF document text
    • http://umkatrade.ru/taco_bell_fire_sauce_nutritionr3744.pdfIn PDF document text
    • https://zedebofewel.weebly.com/uploads/1/3/4/5/134594015/28770a.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/sipijebe.pdfIn PDF document text
    • http://iciko.xyz/sig_sauer_p238_380_acp_engraved_white_pearl_gripsfk78l.pdfIn PDF document text
    • http://lenugaguv.medianewsonline.com/what_is_the_poem_the_raven_all_about.pdfIn PDF document text
    • http://totalcreditreport.info/599217426130j696.pdfIn PDF document text
    • https://cdn.sqhk.co/xogeloke/jjWbhdb/marvel_future_fight_characters_worth_tier_2.pdfIn PDF document text
    • http://curvepreloved.com/8th_grade_reading_comprehension_test_with_answersz7xvd.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/hjbjb8k/bixebepumi.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewakuw/EJifjfm/vimitozunukapuwonuvesev.pdfIn PDF document text
    • https://cdn.sqhk.co/tisojubew/dO8jjea/mebepavab.pdfIn PDF document text
    • https://lujukote.weebly.com/uploads/1/3/2/7/132712447/vitaj-nomep-wakagazupura-dagekux.pdfIn PDF document text
    • http://meetcabinets.xyz/zowow8hwn6.pdfIn PDF document text
    • http://momentshop.website/47568737872ivirp.pdfIn PDF document text
    • http://axecheat8.xyz/madulixasxxjo2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tijopuzotozume.rf.gd/adobe_captivate_8_user_guide.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/71170417015.pdfIn PDF document text
    • http://zelimasiropaf.epizy.com/33489049253.pdfIn PDF document text
    • http://radujexoxetapil.epizy.com/jadatitiferor.pdfIn PDF document text
    • http://dewonatazuji.epizy.com/the_crucible_act_3_quotes_analysis.pdfIn PDF document text
    • http://fanudisa.rf.gd/cheat_android_without_root.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_off0000ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 5616 bytes
SHA-256: 707aaebad1693f649efbb9fd7d33146c75bc16cbe28d14d096985d84436b6d9b
font_01_sfnt_off00010165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10165 10708 bytes
SHA-256: b2964aba30b6f8d45739203ec7d6d52cf2eb30070c3906a837c905925b794ebd

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