Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d8514ff19fde2f…

MALICIOUS

PDF

251.2 KB Created: 2022-06-09 16:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 5a55bd90103661122f5bbc890bec9a40 SHA-1: 5f75d63a1964f973a47d75c9438273217f691f65 SHA-256: f9d8514ff19fde2fabb27654cb04eda1d4845595ff3086f2c417a863b0e9dfb4
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains multiple embedded URLs, including one that acts as an SEO redirector for a 'free-download phishing' lure, suggesting it aims to trick users into downloading further malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the overall detection profile strongly suggest a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

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
  • 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://lovig.co.za/XSRYdR1H?utm_term=ipad+pdf+annotation+apple+pencil+app+download PDF link annotation
    • https://mimepitik.weebly.com/uploads/1/4/1/2/141251138/5838625.pdfIn PDF document text
    • https://3zslitomysl.cz/admin/editor/kcfinder/upload/files/fefidotejidolasazaju.pdfIn PDF document text
    • https://xojoguxivizu.weebly.com/uploads/1/3/4/0/134096407/2460876.pdfIn PDF document text
    • https://vogobozonek.weebly.com/uploads/1/3/4/6/134667402/2461861.pdfIn PDF document text
    • https://jaxugitiboxon.weebly.com/uploads/1/3/5/3/135346561/tuwuxufu-tifapimi-lerixuwa.pdfIn PDF document text
    • https://tufafoselebore.weebly.com/uploads/1/3/5/3/135389740/tigum.pdfIn PDF document text
    • https://molabutelitub.weebly.com/uploads/1/4/2/0/142061256/jeserozojewolet_gurorezer.pdfIn PDF document text
    • https://118sale.com/file/files/6629197700.pdfIn PDF document text
    • http://zhihepvb.com/upload/ckimg/files/202204010606158856.pdfIn PDF document text
    • https://japekubejur.weebly.com/uploads/1/3/0/7/130775222/5331538.pdfIn PDF document text
    • https://nuvomananakoleg.weebly.com/uploads/1/3/1/4/131453817/58bf68.pdfIn PDF document text
    • https://kufoxigokutef.weebly.com/uploads/1/3/1/8/131856815/sixokizika_gifoketepovevo.pdfIn PDF document text
    • https://letosuve.weebly.com/uploads/1/3/0/7/130739520/bb9cf4.pdfIn PDF document text
    • http://dinapart.net/frontend/web/kcfinder/upload/files/62188806638.pdfIn PDF document text
    • https://dexoxewivovevub.weebly.com/uploads/1/3/4/3/134322619/samogalazelomak.pdfIn PDF document text
    • http://yesilderecine.com/admin/editor_resim/file/22305340638.pdfIn PDF document text
    • https://rewobusegofiti.weebly.com/uploads/1/3/5/3/135329444/norilowomuvinoza.pdfIn PDF document text
    • http://pnl.ac.id/asset/kcfinder/upload/files/nazunowesiwukevixude.pdfIn PDF document text
    • https://tigusesakawol.weebly.com/uploads/1/3/4/6/134698679/guvavejesenige.pdfIn PDF document text
    • https://lenagabonozizaj.weebly.com/uploads/1/3/4/3/134314127/radipefa.pdfIn PDF document text
    • https://fagudigozupubu.weebly.com/uploads/1/3/6/0/136042622/2845102.pdfIn PDF document text
    • https://nizuwutino.weebly.com/uploads/1/3/1/4/131482859/2f92b17445a.pdfIn PDF document text
    • https://diruwogedow.weebly.com/uploads/1/3/1/3/131382439/pemuzobebigigu_berumudol.pdfIn PDF document text
    • https://kazirevuteguzug.weebly.com/uploads/1/3/2/6/132681824/jusapujojed-xidusasukeb-nanukot-fafep.pdfIn PDF document text
    • https://bewizujire.weebly.com/uploads/1/3/2/3/132303264/naxofasu-larakenaz-tujobakud-xikijezuxuniro.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/9408937.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003788c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3788C 19668 bytes
SHA-256: 8e8fbb2adda53b9b0f12b1f579e89d3872793ea69e1c03de06a149db375f628d
font_01_sfnt_off0003abad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3ABAD 10380 bytes
SHA-256: 86d6229e5abb731e3021a25fd4d5a29358ae05b32dfbbaddcd19597dfd442d24
font_02_sfnt_off0003c34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C34F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1