Malicious PDF — malware analysis report

Static analysis result for SHA-256 9712ecc9d109ab53…

MALICIOUS

PDF

74.8 KB Created: 2021-03-15 17:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a71789b63a5521f59cfb52cb5b40ebf4 SHA-1: a52485aae71d716e58ae098cd1028c729a95c995 SHA-256: 9712ecc9d109ab53c2de9b925394ff6a2d4152868c3b17b41be446c5cdbc1165
144 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic firing indicating it is a phishing lure designed to trick users into downloading content. The embedded URL, https://lozipotod.ru/wix?keyword=animal+adaptations+webquest+structural%252Fbehavioral, is the primary indicator of this malicious activity. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/wix?keyword=animal+adaptations+webquest+structural%252Fbehavioral PDF link annotation
    • https://jumolemema.weebly.com/uploads/1/3/4/8/134853288/mosokefifesumomujem.pdfIn PDF document text
    • http://kungfumalibu.com/dell_latitude_e6410_i5_datenblatt4glfj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447098/normal_5fc863cda84c6.pdfIn PDF document text
    • https://pazerutafu.weebly.com/uploads/1/3/5/3/135392620/marazoken_vifawexewu_fezawuvob.pdfIn PDF document text
    • http://pivuzetusiteded.iblogger.org/types_of_bacterial_toxins.pdfIn PDF document text
    • https://sarerudaguf.weebly.com/uploads/1/3/4/3/134373173/47669bbe621d56.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/39b86f07e447064.pdfIn PDF document text
    • http://bifixofunoxov.iblogger.org/propresenter_5_download_mac.pdfIn PDF document text
    • https://nipetetoxijekuj.weebly.com/uploads/1/3/4/7/134718304/7976686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388827/normal_6017cf55ec3c3.pdfIn PDF document text
    • http://fortuneo.biz/956104720829uatf.pdfIn PDF document text
    • https://wixuzezokanozav.weebly.com/uploads/1/3/4/6/134663812/8119550.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368997/normal_5ff07bdd9ccc5.pdfIn PDF document text
    • http://barberking.best/68800666710lew57.pdfIn PDF document text
    • http://kupivse.xyz/automated_guided_vehicle_agv_market_analysisy6o2i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380705/normal_60179ce21b1a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504922/normal_5fe6a7c2a3c26.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/zoluwivebiro/why_citi_wall_street_oasis.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/21917476901.pdfIn PDF document text
    • http://wosoremozojofam.epizy.com/fish_download.pdfIn PDF document text
    • http://gepuxaxevo.rf.gd/how_do_i_use_lg_direct_drive_washer_dryer.pdfIn PDF document text
    • http://riremim.rf.gd/bachelorette_party_invites_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/20945338190.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/element_60_inch_tv_elefw606.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/67133528864.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_off0000e59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59D 5756 bytes
SHA-256: a8c9f23b50bfb14e21d48d8fa4ab2752c7bfe98b5746974ddeeacc7ddcccff4b
font_01_sfnt_off0000f913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF913 10656 bytes
SHA-256: 9429165312761c1f9937e08a0d41aa0203e8d56eaa0b14e5476ba88cdffac2a9