Malicious PDF — malware analysis report

Static analysis result for SHA-256 34568688e29e5a3e…

MALICIOUS

PDF

77.1 KB Created: 2021-03-23 19:48:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e9e3c73b05b686ce1eddc59b72d6e3c2 SHA-1: 4e9a8edc88ad2a25f613e72b01d09c4fc5d8756b SHA-256: 34568688e29e5a3e33b7f970f9450365e73f8adc6db8f1d482c8dab4651dc6b8
76 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a lure for free downloads, redirecting to a malicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting a site that likely hosts further malicious content or phishing forms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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://dugedepap.ru/wix?keyword=metric+system+conversion+chart+king+henry PDF link annotation
    • https://cdn.sqhk.co/vigesiji/gjbNgep/67434167638.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/bearing_selection_handbook.pdfIn PDF document text
    • http://vozajomaralamer.mygamesonline.org/alopecia_frontal_fibrosante_tratamento.pdfIn PDF document text
    • http://gukiduwonaxinef.getenjoyment.net/kundalini_yoga_sequence_for_beginners.pdfIn PDF document text
    • http://zomosidotewe.sportsontheweb.net/66853931985.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/nilalaxofudenuja.pdfIn PDF document text
    • http://defokozixeral.sportsontheweb.net/dictionary_arabic_to_urdu_free_download.pdfIn PDF document text
    • http://kosolibanun.iblogger.org/96932806989.pdfIn PDF document text
    • http://felejus.iblogger.org/goku_vs_beerus_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/jjWjege/puppy_runny_nose_and_cough.pdfIn PDF document text
    • https://cdn.sqhk.co/papowepu/bNhjgSp/fm_2015_wonderkids_goalkeepers.pdfIn PDF document text
    • https://cdn.sqhk.co/zebasama/2pigfjj/como_usar_uber_en_barcelona.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/6gfpghW/but_not_for_me_sheet_music.pdfIn PDF document text
    • http://bekasopeli.22web.org/say_something_lyrics_sheet_music.pdfIn PDF document text
    • http://kulixebuvalafin.iblogger.org/john_deere_trs21.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/xafaxotaful/42930028062.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/does_publix_have_chick_fil_a_gift_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/46987351491.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/adelle_sans_free_font.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/veviwoxez.pdfIn PDF document text
    • http://balazetesu.epizy.com/enable_transmit_beamforming.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/bulave_tujhe_yaar_status_song.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/kumetisusarubo.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/gupikivirupupip.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/android_text_messages_backup.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_off0000f01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01D 5412 bytes
SHA-256: d6002748cb030e5960dccb1525712243ec38ffa87c39bf76659c56ca5714fef9
font_01_sfnt_off00010279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10279 10720 bytes
SHA-256: f6b607c88efc0d270b9b3017f2e02f82574bcc3e037f6b68eb07cf01fe26857e

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