Malicious PDF — malware analysis report

Static analysis result for SHA-256 125cccf4e6590814…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 06:32:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 68c0b914ebc88e3fecd5102a6f3f6ac0 SHA-1: 92b777c2be9f5a9da8d48b846c8416f420a008ac SHA-256: 125cccf4e6590814b9388fe303cd3678454bb0521a570c45ddd7f8c43f528704
196 Risk Score

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
  • 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://golowaki.ru/award?keyword=shell+scripting+tutorial+point PDF link annotation
    • https://cdn.sqhk.co/vomisape/ydjesja/throne_of_eldraine_brawl_decks_reprint.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/LjczzV3/97678369771.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/jbog8gj/naruwuwu.pdfIn PDF document text
    • https://nojezedefefowas.weebly.com/uploads/1/3/4/7/134762002/nopixe-lapigifafovadi-mosabojixix.pdfIn PDF document text
    • http://reawolt.online/86863999605k5nig.pdfIn PDF document text
    • https://bivolureru.weebly.com/uploads/1/3/4/5/134583024/xumibexuvixer.pdfIn PDF document text
    • https://rorujazikuje.weebly.com/uploads/1/3/1/3/131379225/damerafureg_timotelipome_lexinusibenomil.pdfIn PDF document text
    • https://cdn.sqhk.co/zibepidok/Ugiie34/10396763912.pdfIn PDF document text
    • https://cdn.sqhk.co/zovifesojeme/YcLYkHd/zisudajokuzuzam.pdfIn PDF document text
    • https://masevaru.weebly.com/uploads/1/3/5/3/135346062/6d697d2d7facf6.pdfIn PDF document text
    • http://fullpisetc.ru/meguxewasugovabeb3i905.pdfIn PDF document text
    • http://auth02mobility.com/806518626040fhf4.pdfIn PDF document text
    • https://vujugorakiti.weebly.com/uploads/1/3/4/7/134719441/1b4fb209f.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/livivuvuwugeb/platformer_boss_rush.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/63231757577.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/lapavunudeledikajawasaba.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/xonojuwolojivowotuvamim.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/8808052279.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/online_horoscope_tamil.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_off0000df7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7C 5300 bytes
SHA-256: 7dc22900b5e47487174b88a882d8773389aad7c5768e90ad536ec9c2f7a353a1
font_01_sfnt_off0000f17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17B 10744 bytes
SHA-256: 414811092da260528d128db8c74bb3dd80ace2c90b57208b66e597e553c9ad00

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