Malicious PDF — malware analysis report

Static analysis result for SHA-256 d410a067f704ad9f…

MALICIOUS

PDF

73.0 KB Created: 2021-02-07 05:00:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ec3ea8af1902aa412742706c2c68c91b SHA-1: 8457629206fb30c5f090ae46d5d7e328f686558b SHA-256: d410a067f704ad9f37a7da5556441373baefc04bd6a4cc3e26802cad9d451049
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting, indicative of a link farm or phishing campaign. Heuristics indicate the presence of malicious redirector infrastructure and a high ML classification score. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

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
  • 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 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.
  • 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://yafferge.ru/123?utm_term=eclipse+phase+pleasure+podcast In PDF document text
    • https://cdn.sqhk.co/koxuzofu/jc1JKha/motirigefijuxidisovopogi.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/dmHGifL/slide_away_miley_cyrus_chords_ukulele.pdfIn PDF document text
    • http://kernig.online/dupedijaxhqzz5.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/gjjeea8/gcc_bookstore_promo_code.pdfIn PDF document text
    • https://cdn.sqhk.co/guwewaxa/Yx8LyyL/3860358447.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/5484431.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/gfEigQ2/40257543468.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/2Rjibic/starlink_battle_for_atlas_deluxe_edition_worth_it.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/eIbAdhc/862841874.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/puhbQgc/32558795466.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/hfko0dZ/baxixexikowovuwedoxe.pdfIn PDF document text
    • http://copyright-securityx.com/51292767661t34hr.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/hlgejjH/flying_weakness_fire_red.pdfIn PDF document text
    • http://fb-ig-copyright.com/gallistel_ellis_sample_report6ycss.pdfIn PDF document text
    • http://trelon.fun/lexispaper_offline_wikipedia_dictionary._comqwiud.pdfIn PDF document text
    • http://vidclips.design/lemonade_shop_gamek13e0.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/zowejunef/16533888697.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/napuvazaderegumewep.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/subefowufosimorisabal.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_off0000e132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE132 5120 bytes
SHA-256: b0c21ec80a6e53641242892bf0297eade86648f84c0b325871fa8b2bc669e419
font_01_sfnt_off0000f294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF294 10800 bytes
SHA-256: 45c81c8ad642c17722131090e1218173d8ce9ba82c0746a6fad1f325d9da8038

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