Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a444c15e025d0f…

MALICIOUS

PDF

68.1 KB Created: 2021-02-21 01:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e7213ab5bfc0659ea94e819a8efdabdd SHA-1: 5b2b5bab43a727cbb9781b3b8e49d9e90345b4a4 SHA-256: 80a444c15e025d0ff4ed79c4363958c5518e08decf547aaee261401ec54083f8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://maypoin.ru/wix?keyword=immortal+cancer+cells+worksheet+answer+key PDF link annotation
    • http://ebay-coupon.ru/best_photo_editing_app_online_freeef75h.pdfIn PDF document text
    • https://cdn.sqhk.co/tifobebe/aH8vgfD/78606456218.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/ghjjCjd/on_my_own_ross_lynch.pdfIn PDF document text
    • http://reform-st.ru/73805263790bs5c8.pdfIn PDF document text
    • https://cdn.sqhk.co/vonixilavot/hnjhShc/74060125398.pdfIn PDF document text
    • https://fujulisu.weebly.com/uploads/1/3/4/0/134042697/magazavuji.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/gKwBihb/south_park_best_friends_forever_keanu_reeves_reference.pdfIn PDF document text
    • http://grampus-shop.com/404917137459zyrl.pdfIn PDF document text
    • http://clubstore.info/toyota_camry_xle_2020_dimensionszcsdo.pdfIn PDF document text
    • https://zotadapavera.weebly.com/uploads/1/3/4/4/134483721/xomax-sirozivak-zasimij-verijatuvi.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/nutagavafo6igny.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/takateg/29519497274.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/wuvotekigafumapuge.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_off0000cfa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA7 5236 bytes
SHA-256: 18963ed24e0fe501523b7ba9211f3e1342e63b8e26e94deaad20d98f52712679
font_01_sfnt_off0000e15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15A 9932 bytes
SHA-256: dff25d7336b7003fc7c75b0aefe5b23c7393c8c6b068ba46ab9c31df294f153f