Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ec9078e47702d2…

MALICIOUS

PDF

66.2 KB Created: 2021-02-14 09:19:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f233f56d49f604733a642cef1fb16822 SHA-1: deeb0600eee6cb878574daaf7b1f1386969a3c98 SHA-256: e1ec9078e47702d2934de71762038126ef8b26f7994c51d9b2d2063067ed9676
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to suspicious domains and are flagged as part of a link farm or SEO redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded links suggest an attempt to redirect users to malicious websites.

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
  • 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.
  • 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.
  • 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://jottigo.ru/wix?keyword=rational+numbers+worksheet+with+answers PDF link annotation
    • https://tozadifoxu.weebly.com/uploads/1/3/4/9/134904498/ed2ea79cf13f56.pdfIn PDF document text
    • http://fishland.store/ketewatakovakerujeftope.pdfIn PDF document text
    • http://dhl-order.info/kidemejivenidufk4do7.pdfIn PDF document text
    • https://napolapivu.weebly.com/uploads/1/3/5/3/135303388/6371643.pdfIn PDF document text
    • http://kafemefiturokuk.22web.org/chloroform_side_effects.pdfIn PDF document text
    • http://agentsoft.space/comic_page_templateso5qnr.pdfIn PDF document text
    • https://neripekotijoba.weebly.com/uploads/1/3/2/6/132681370/efb4d9f0ae.pdfIn PDF document text
    • https://rizapomon.weebly.com/uploads/1/3/0/7/130739727/6890922.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fazesiviwor.rf.gd/macmillan_english_language_book_1_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/idsa_guidelines_infective_endocarditis_2015.pdfIn PDF document text
    • http://daxokefi.epizy.com/17162617445.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/yaseen_sharif_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/bantu_education_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/48799544810.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/prevent_form_submission_using_javascript.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_off0000c49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49A 5228 bytes
SHA-256: 5ceef34b2d5afeac81d5540b52934c73fa358c99f2e86ea5b0b841d2736ae257
font_01_sfnt_off0000d648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD648 11000 bytes
SHA-256: 35db20f39ca9806240ec666a92a30bb3db87196e5d8ad010ec0a3487a4d50f23

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