Malicious PDF — malware analysis report

Static analysis result for SHA-256 90d2660ee1589c5f…

MALICIOUS

PDF

72.3 KB Created: 2021-01-23 20:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d6a87315bd6b99d669b8e0c1821861c2 SHA-1: e49e35cbd27c358e138c8edb0d2f2f89b1a04111 SHA-256: 90d2660ee1589c5fd6646e77a814a0e5cbb9276c38f8522b5feaa76c5f734add
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=romero+oil+in+english PDF link annotation
    • https://site-1174749.mozfiles.com/files/1174749/learn_html5_and_css.pdfIn PDF document text
    • https://site-1172092.mozfiles.com/files/1172092/highwayman_meaning_synonym.pdfIn PDF document text
    • https://lujoduxatodovaw.weebly.com/uploads/1/3/2/3/132302833/6654442.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418781/normal_5ff3f8b25f52e.pdfIn PDF document text
    • https://site-1258791.mozfiles.com/files/1258791/bwv_1067.pdfIn PDF document text
    • https://site-1259073.mozfiles.com/files/1259073/zojumafasipigebobuv.pdfIn PDF document text
    • https://cdn.sqhk.co/jikogifuxa/bNjhTp3/wakelitubonokaduze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404121/normal_5fcdc12c1cc0a.pdfIn PDF document text
    • https://dikemogegopur.weebly.com/uploads/1/3/1/4/131406608/6482680.pdfIn PDF document text
    • https://site-1168169.mozfiles.com/files/1168169/droid_circuit_calc_pro_apk_download.pdfIn PDF document text
    • https://xazusajapefo.weebly.com/uploads/1/3/1/3/131383727/nowemovofo.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/ichjgLa/bojabedewe.pdfIn PDF document text
    • https://cdn.sqhk.co/wijanotunam/gchPtgd/jigomuwizuwemopijekufede.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368970/normal_5ff3cd87466d0.pdfIn PDF document text
    • https://puzugisebo.weebly.com/uploads/1/3/1/4/131438758/1359628.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4E 4896 bytes
SHA-256: 4b025acc15bceaba9838413cf9121926e133a757ec59fe551c33816846b3b391
font_01_sfnt_off0000efd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD1 10812 bytes
SHA-256: 5e1a0fcc0a513524b3592f483a46b46600f5bb4679ef6429e869247deeb998a0