Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b43090762b9162…

MALICIOUS

PDF

83.3 KB Created: 2021-03-13 16:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ea660ea81cb20af823cd0017ae8cb753 SHA-1: 9e7efa34a54f7efb7d1c216e7482692d3b96316e SHA-256: 47b43090762b9162ee370780f24f5b11527060e0a8395de155351168d0d349c7
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to distribute malware or phish for credentials. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document directly asks for sensitive information like private keys or passwords, a common tactic in phishing and credential theft campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/wix?keyword=can+i+install+showbox+apk+on+firestick PDF link annotation
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/pexixixuligawakuker.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/fUeidjd/90_s_english_songs_mp3_free_download.pdfIn PDF document text
    • http://navalny.design/addition_and_subtraction_worksheet_year_28tr1c.pdfIn PDF document text
    • https://cdn.sqhk.co/wozovege/a3Ju66W/linen_tablecloth_reviews.pdfIn PDF document text
    • http://gachihyper.xyz/what_instrument_is_best_for_beginners09ulx.pdfIn PDF document text
    • https://cdn.sqhk.co/zaliroded/Svjjjcm/download_block_fortress_empires_mod.pdfIn PDF document text
    • http://specrazreshenie.com/85900030831u7abt.pdfIn PDF document text
    • https://wutodifutatur.weebly.com/uploads/1/3/2/8/132814097/gemiw.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/kipefatu.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/acids_and_bases_worksheet_ap_chemistry.pdfIn PDF document text
    • http://xilenemivagola.mywebcommunity.org/que_es_un_ttulo_de_propiedad_en_mxico.pdfIn PDF document text
    • https://cdn.sqhk.co/xegigujatefa/jjNibvL/bike_wheel_size_chart_700c.pdfIn PDF document text
    • https://cdn.sqhk.co/woberimi/cijigjc/jungle_oz_endless_run_mod_apk.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/gadumagabusodel/92345266885.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/nordictrack_cx_1055_specifications.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/96574950266.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/dismissed_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/what_is_the_holy_book_of_islam_and_how_does_it_compare_to_the_bible.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 5372 bytes
SHA-256: 44a9454bb06c3e0ac5640e148d746e948f33b28f4504cf0c578ea1a58f0400c9
font_01_sfnt_off000102bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BF 11660 bytes
SHA-256: c24cf532da92cbcbb83a581bddac8e6dc212cf2589f9b8a799567cbb4e002ac3
font_02_sfnt_off00012a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A42 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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