Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e62bff8a02f6d79…

MALICIOUS

PDF

145.0 KB Created: 2021-03-19 16:09:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2851520131b0d3e6895b5c7f4ed5b1c3 SHA-1: b04f7f752dbf89f6097e38e192fe3469076cdbe9 SHA-256: 1e62bff8a02f6d79abf5e7835827c676268e3eb75a1d159efcc63d4ae14c3125
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a download link. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs point to potential download locations for further payloads, aligning with a phishing or malware distribution attack pattern.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/award?keyword=firewall+architecture+for+the+enterprise+pdf PDF link annotation
    • https://cdn.sqhk.co/nakusunegud/jaBjiTw/54072933452.pdfIn PDF document text
    • http://sibasijiv.22web.org/blood_type_a_diet_list.pdfIn PDF document text
    • https://cdn.sqhk.co/rafopaluko/dzgcgcU/tavonod.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/Piej73r/women_s_callaway_golf_clubs_used.pdfIn PDF document text
    • https://cdn.sqhk.co/rovukupovumo/giiQijY/95721790305.pdfIn PDF document text
    • https://cdn.sqhk.co/sozimelizak/hgcHDhi/7253674678.pdfIn PDF document text
    • http://xojokare.iblogger.org/tejetenowinimoxogovuze.pdfIn PDF document text
    • https://cdn.sqhk.co/woluzadeviv/iiIhbgh/47840013719.pdfIn PDF document text
    • https://cdn.sqhk.co/pabukerofo/cdGhigj/how_common_is_ticker_tape_synesthesia.pdfIn PDF document text
    • https://cdn.sqhk.co/sixajuzap/fjeOgdN/ginodowefarexusinazudo.pdfIn PDF document text
    • https://cdn.sqhk.co/duputokodoz/19xEZ8g/can_you_escape_fate_crazy_games.pdfIn PDF document text
    • https://cdn.sqhk.co/vomuvojovi/egcxsxZ/idle_human_app.pdfIn PDF document text
    • https://cdn.sqhk.co/reromiwo/aifIjfP/panic_button_app_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wanikulasebej.epizy.com/bozizojuwememituzasifon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8df6d7e8-3b36-4476-a586-6be6ee042ab2/perov.pdfIn PDF document text
    • http://wadarudi.epizy.com/mugusudafifosasunop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f16c921-b814-4134-87e2-c8c5440e1883/64287813381.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/faeries_aire_and_death_waltz_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/annona_muricata_anticancer.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_off0001fd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD09 5292 bytes
SHA-256: b90eba36f430c3f3cc7f41233fef7a41b58422b6b0445a0afdce25f763d6fce4
font_01_sfnt_off00020f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20F14 11572 bytes
SHA-256: c245302d2d38babb64d12cd7fa6c80897751300f570b7de58ce4e6a805be6de0

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