Malicious PDF — malware analysis report

Static analysis result for SHA-256 314d4ace29c302ce…

MALICIOUS

PDF

112.8 KB Created: 2021-01-26 05:26:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fabd1b8161b471cc10d754b34d0a1478 SHA-1: 2e1877d61376eb79ea1751232359dda8c7525a2d SHA-256: 314d4ace29c302ce39134a5918ada2391064c6edd739d31066057ba235d9e096
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. It contains an embedded URI that redirects to a URL designed to lure users into downloading further malicious content, likely for a phishing campaign. No scripts were extracted, but the presence of external URIs and the nature of the heuristics strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=crucial+conversations+chapter+10+yeah+but PDF link annotation
    • http://tublitalia.fun/crossing_the_way_adventure_park_priceswioe3.pdfIn PDF document text
    • http://smartcoin.design/80s_music_hits_ukwh6xe.pdfIn PDF document text
    • http://pedalini.club/granny_chapter_two_escape_game_onlinerqdtq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381287/normal_5ff385fc69d0f.pdfIn PDF document text
    • http://icub.tech/68793462142nng09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_5fe9ac5f01102.pdfIn PDF document text
    • http://okrasote.info/english_learning_videos_beginners7jwrg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384164/normal_5fcf318f64dc0.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/kuxegu/geophagus_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/background_frames_for_photoshop_free.pdfIn PDF document text
    • http://rasiritodir.rf.gd/30687259799.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/the_hague_tourist_guide.pdfIn PDF document text
    • http://kedekivotizera.epizy.com/diablo_2_median_xl_install_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/75778871068.pdfIn PDF document text
    • http://nirobow.epizy.com/nokiwewanuge.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/game_baby_bus_ice_cream.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/antivirus_apk_full_2018.pdfIn PDF document text
    • http://kazaxese.epizy.com/rowolufov.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/beatless_op_1.pdfIn PDF document text
    • http://sedobuxekazadi.rf.gd/81540878200.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_off00017b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B34 5420 bytes
SHA-256: be9899ebf9310912f8a46ae1920d9262534cc207f113ccf4330c93553e954214
font_01_sfnt_off00018da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DA1 11876 bytes
SHA-256: 5640a9848088073fa1851a690b51e1c3ff832756d378d234fa156285f01a17ec

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