Malicious PDF — malware analysis report

Static analysis result for SHA-256 b599a02b622e582b…

MALICIOUS

PDF

79.2 KB Created: 2021-03-15 05:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bebfd735fdefd11585545b6950365b7e SHA-1: 9e035f0d08eaa8b67d50e3092131304e008ee232 SHA-256: b599a02b622e582ba5e1f834d0caee06df8a8783f078d20588fdeb509463e47b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=crosley+troubadour+manual PDF link annotation
    • http://vigirorimikana.medianewsonline.com/paradoxical_aciduria.pdfIn PDF document text
    • http://in-arenas.com/home_interior_designing_colleges_in_delhipwz2i.pdfIn PDF document text
    • http://kavademive.sportsontheweb.net/skyrim_how_to_make_bashed_patch.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/gupidepabewavuwok.pdfIn PDF document text
    • http://amst-watch-v1.club/563982408601qfxw.pdfIn PDF document text
    • http://zaxiluxedexu.getenjoyment.net/kulatatokizugonava.pdfIn PDF document text
    • http://obmenkalnr.online/35743245081u8gao.pdfIn PDF document text
    • http://eurostore.info/how_to_live_a_stress_free_life_wikihowpnifd.pdfIn PDF document text
    • http://olx-delivery.cc/price_of_electronic_choke41kyc.pdfIn PDF document text
    • http://sewatumafuta.medianewsonline.com/tell_me_three_things.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/trigonometric_functions_period_graph.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvevevef/JHHr4ge/biludajidatuv.pdfIn PDF document text
    • http://jadebey-x.com/warhammer_8th_edition_changesjppc7.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/haPKFfg/97731939349.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/jggcdAh/98324783652.pdfIn PDF document text
    • http://eagleaff.com/pearson_algebra_2_workbook_answers2jhny.pdfIn PDF document text
    • http://kimujedat.mygamesonline.org/genawatenugomuxane.pdfIn PDF document text
    • https://cdn.sqhk.co/lekifuwixal/cjdhfqN/fabekipa.pdfIn PDF document text
    • http://dwatches.site/gixukiberirukbcf49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d148ac79-40e7-4285-8b57-a28c13d89ade/womap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b00b1ee-6075-496d-85e5-702fb90eb6e9/65825804863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c73731cc-6375-46ab-afbf-3e4ddb0044a5/scary_stories_to_tell_in_the_dark_all_artwork.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff562a59-43e8-4289-8d59-ddc578b5f6f7/netij.pdfIn PDF document text
    • http://zenakezogutomu.onlinewebshop.net/bsa_medical_form.pdfIn PDF document text
    • http://rurebafib.onlinewebshop.net/benefejusifa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE8 5116 bytes
SHA-256: e50f3645f389f518b994b908444b2389141450782cf64ac7edd7538d29eb753c
font_01_sfnt_off0000fd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD31 2160 bytes
SHA-256: 3dbebe8cde248b2466dced786dffd3c0b5d883a70c9b86727f9d420b692a67bb
font_02_sfnt_off000106a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A2 11808 bytes
SHA-256: 3b928b7269cbb92f408308ecf26d515d78a3e95e6aacf2a67b893b01339921df

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