Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dcf75b5ebdff713…

MALICIOUS

PDF

72.4 KB Created: 2021-02-25 03:26:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 110b93b54fe16b8251b157742ab840e5 SHA-1: c7e915a44eda740b79a87c220036a39ed0caf3ad SHA-256: 6dcf75b5ebdff7134651767e7c2bcd15f66476d4ba916133bc7a32b8fe69e447
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://druttle.ru/award?keyword=how+to+acrylic+paint+galaxy PDF link annotation
    • http://jinevul.mygamesonline.org/80947582035.pdfIn PDF document text
    • https://cdn.sqhk.co/noxivudeva/j1geafo/5_star_hookah_customer_service_number.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/how_to_take_apart_mr_coffee_espresso_machine.pdfIn PDF document text
    • https://tenemetit.weebly.com/uploads/1/3/2/6/132696414/aa739b1b96db.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/52839965278.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/mean_from_a_frequency_table_exam_questions.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/pipupuvi.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/8NicJvB/50754693775.pdfIn PDF document text
    • https://sifobidegi.weebly.com/uploads/1/3/0/8/130874382/nudirajo-bitoj-geluzozis-durabusi.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/gjngfjf/three_kingdoms_kill_card_game.pdfIn PDF document text
    • http://zeropium.com/ruboxuxevuvutupuvadegv0b7.pdfIn PDF document text
    • http://stroy-level.ru/17519963444r771o.pdfIn PDF document text
    • https://cdn.sqhk.co/tifobebe/dhhHjdi/directv_package_channels_compare.pdfIn PDF document text
    • http://parralax.net/church_membership_resignation_letter_template8yi11.pdfIn PDF document text
    • https://xajekegok.weebly.com/uploads/1/3/3/9/133997321/kikavafozewera.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zejibanunepi.myartsonline.com/638464179.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_off0000e077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE077 5144 bytes
SHA-256: be74d6cd1c407dc115d6a2169cada1cb7b89fbd8d056ea6425dd93d957f7e2ee
font_01_sfnt_off0000f22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22A 10192 bytes
SHA-256: 0aefab334a698734002fe285d1faaf52d9f918384e9ef7419fc5632f9662b041