Malicious PDF — malware analysis report

Static analysis result for SHA-256 f54804663a2a373b…

MALICIOUS

PDF

70.2 KB Created: 2021-03-01 08:40:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 678e06172777e112a091f8098da8f1f3 SHA-1: 226543e3dc14d1a482b077e3b677ab98e28440df SHA-256: f54804663a2a373b32c3a271bb5dd6051e382607f875c6339877def01ff7b6cb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/award?keyword=nespresso+delonghi+descaling+instructions+youtube PDF link annotation
    • https://linefalaxig.weebly.com/uploads/1/3/2/6/132682404/jebokafagupusaw_vilenaxemobujip.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/mafef.pdfIn PDF document text
    • https://lomamunapud.weebly.com/uploads/1/3/5/3/135315780/lizesijuk-tatizewo.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/kisilawafeled.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/59390224394.pdfIn PDF document text
    • https://dijitisabotiji.weebly.com/uploads/1/3/5/3/135324222/0e019.pdfIn PDF document text
    • http://dasiroxejipi.22web.org/movie_counter_new_punjabi_movie.pdfIn PDF document text
    • https://vopesowe.weebly.com/uploads/1/3/4/6/134638419/xejavopaxe.pdfIn PDF document text
    • http://xivetaf.22web.org/xobazigukosesoretiseges.pdfIn PDF document text
    • http://ziwegiwe.iblogger.org/5373105182.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vilusosexar.epizy.com/format_factory_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/buzepikefokexikov.pdfIn PDF document text
    • http://nafinuxunowu.rf.gd/16115694268.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/bofej.pdfIn PDF document text
    • http://vexabimumemig.atwebpages.com/kunixen.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/83797633022.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/amanush_bengali_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/76512413197.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/the_scarlet_pimpernel_1934_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/81345670748.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/risulitemezutugivatiluxal.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/amplified_bible_by_tecarta_apk_free.pdfIn PDF document text
    • http://volomuladifute.rf.gd/household_budget_and_finances_template.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_off0000d5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BB 5544 bytes
SHA-256: ff7f45dcc3d20a42c00de1f2dec9031b20ec5686198fbd9da2a25f99bb396df8
font_01_sfnt_off0000e892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE892 9944 bytes
SHA-256: a097745851765349f0eb9815f3124dde3cda8ae3969552006229decdba477820

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