Malicious PDF — malware analysis report

Static analysis result for SHA-256 df506adc479328b3…

MALICIOUS

PDF

74.6 KB Created: 2021-02-16 21:52:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 95b691d9842d87a97ae95ad9ec92b2d5 SHA-1: 4a305d36860471ac206d9fe6c56e15bdc1147dde SHA-256: df506adc479328b36698e5504de9dc550236e60b02595aa0b68ae0823de03245
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image and a download button to trick users. The embedded URL `https://leonvi.ru/strik?utm_term=how+to+reset+epson+printer+ink+pad` is identified as an SEO redirector for phishing. While no scripts were explicitly extracted, the ClamAV detection and ML classifier strongly suggest malicious intent, likely related to malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/strik?utm_term=how+to+reset+epson+printer+ink+pad PDF link annotation
    • https://cdn.sqhk.co/mobirewin/d1hgfTm/sewoboxaxalezuvetot.pdfIn PDF document text
    • http://onesmall.space/im_a_spider_so_what_manga43wl2.pdfIn PDF document text
    • http://totalcreditcheck.info/3230545971566is0.pdfIn PDF document text
    • http://mujogatebili.22web.org/rimalatival.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460477/normal_5ffbc91de4ec5.pdfIn PDF document text
    • http://kokofiru.22web.org/personal_factors_affecting_consumer_behaviour.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369504/normal_5fe1b22a2b212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_601dcbdd5d89b.pdfIn PDF document text
    • http://pixell.store/odontologia_estetica_contemporanea_gratist8koj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kudogal.rf.gd/bewars_audio_naa_songs_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/gcse_english_language_paper_1_2017_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/free_printable_multiplication_worksheets_for_2nd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/reporters_on_cbs_sunday_morning_show.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/presentation_skills_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/tatala.pdfIn PDF document text
    • http://bafuxinasu.epizy.com/wopedaxebevisax.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/welibixesijoxepefabidar.pdfIn PDF document text
    • http://gewapapis.epizy.com/smok_alien_220w_manual_espaol.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_off0000e73f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73F 5036 bytes
SHA-256: 9ad50411a4c2e666e4a371c4934866a000f1716eb036a0ab01f841b23e74b692
font_01_sfnt_off0000f87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87E 10824 bytes
SHA-256: 1f4f3a6e01d5e90b27af97c8fca1bda64be03bc5a913f23e06d2e2f6a4e2e999

Open this report in the interactive analyzer, or submit your own file for analysis.