Malicious PDF — malware analysis report

Static analysis result for SHA-256 d78cecdc4aba9c1a…

MALICIOUS

PDF

89.5 KB Created: 2021-04-28 16:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a149350a35e6331ff0bc7832078da9bc SHA-1: b069bcbee626ea78395f26139d6374ea4faf6ca9 SHA-256: d78cecdc4aba9c1a6c490c2ae7adacca9df1be6cf3d2beebafcff857a287b32d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a lure related to 'girl from ipanema chord melody' and a high-confidence heuristic indicates it's a phishing attempt using an SEO redirector. The embedded URL points to a suspicious domain, likely serving as a landing page for the phishing scheme. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/strik?utm_term=girl+from+ipanema+chord+melody PDF link annotation
    • http://raisinshub.club/how_to_add_mendeley_citation_in_worda68hn.pdfIn PDF document text
    • http://rukunikuxajosog.22web.org/novamavomosununo.pdfIn PDF document text
    • http://tobabitujaxaw.22web.org/803643887.pdfIn PDF document text
    • http://kavakedego.scienceontheweb.net/econometrics_book_by_koutsoyiannis.pdfIn PDF document text
    • http://helplnstagram-confirm.com/is_lemon_a_detoxzavg3.pdfIn PDF document text
    • http://cheatyou.site/criminal_defense_attorney_chicago_pro_bono9k2v5.pdfIn PDF document text
    • http://neojust.ru/hush_full_movie_watch_online_with_english_subtitlesab3bp.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/wifukedot/applied_digital_signal_processing_theory_and_practice_solution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68bc5e82-c34e-4ef2-b902-d2135e3ebb7e/22433484339.pdfIn PDF document text
    • http://ruxemad.epizy.com/navy_prt_standards_2020_male_40-44.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85388b4f-994c-4731-9e17-081d7b892e23/24974101587.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/maytag_bravos_xl_medb835dw_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/bsh_guidelines_polycythaemia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd51cc56-21fd-4868-9cd8-a1fb8e875d3b/delonghi_toasters_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/dedijizofodibixonajix.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/5266666485.pdfIn PDF document text
    • http://sijozorugepidu.epizy.com/letter_of_intent_template_construction_uk.pdfIn PDF document text
    • http://jaweratiz.atwebpages.com/alternate_picking_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/where_can_i_get_a_free_rental_agreement_form.pdfIn PDF document text
    • http://sesoxevanadike.epizy.com/the_theory_of_island_biogeography_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/char-broil_tru-infrared_portable_patio_bistro_180_tabletop_grill.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F5 5352 bytes
SHA-256: 04f06126a86e7f2ace01de6a97f12d0d407bf1fd812d4424f2307f9fa2d2abc7
font_01_sfnt_off000123fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FC 3020 bytes
SHA-256: 98da5072a2bd80a3227d4795bcc474ca0ef44a897143498b78186679176079b4
font_02_sfnt_off00013035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13035 12916 bytes
SHA-256: c62948b1dc074b99aa6ecc5c67d96dbbf94f85839779a5dc87440c536d88f0f1

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