Malicious PDF — malware analysis report

Static analysis result for SHA-256 e91348a6a5e10fcf…

MALICIOUS

PDF

42.8 KB Created: 2020-10-16 18:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f7778f55e6ad68714973ab8f0d899328 SHA-1: 7a2a5440c5db53e63048ae58f41d072a0b0ca3de SHA-256: e91348a6a5e10fcf2bc4348a6da10ae8d787bd44005cfb1be857c985265d8fa9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/123?keyword=android+volley+post+string+request In PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/jujewosalik.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/wowabaxisefidet-nikuvajekibesim-napoxalapa.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/lixavej_rivutavipulox_vunezikavad_lirumonoguwako.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/dobogejawizil.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/tomoluvaxebi-gaxiwapoxafet-fuwurinasokab-xanefedirad.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/03fb1a04.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/suvogoguxo.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/19d94eeb78.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/56c3a7aab.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/11af0c1d3e8.pdfIn PDF document text
    • https://dumejolizaxoko.weebly.com/uploads/1/3/0/8/130814858/kenogene_duzasibug_rotalarux.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/9743488.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/8911912f5f58fde.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/faedc704-097a-4697-a1f3-29f3be70d0e4/22777574554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21e24797-5bed-47f7-90f9-f8036f26e440/70432955723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3775e91f-76f7-4b56-85b1-9e1e86faea69/33899077658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eea6d8f7-3fee-4d9c-b2ee-d7d1342e1532/53860122946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b89f8147-5d2e-408d-9f88-e54ee0bfcddb/91657469682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f68a34a5-59fd-4296-9d42-843416a5bb0b/kuwurip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb309046-398c-4d78-b056-f01c61a98606/67069772873.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce584827-547a-44cd-a4e9-ad9eac6ee6c8/89414460109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/372a5277-807b-4c8b-a201-71a589a6c45b/8285416980.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_off00006763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6763 5192 bytes
SHA-256: 60b5697a246036cc8186eaa6fbdd5041ff7112ce37decc669655f9fbcca57d57
font_01_sfnt_off00007920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7920 10768 bytes
SHA-256: 1d56d5b145959bd69cec6deff20acb72a150e92ebe5747bc3c0bc3c0dbc8abb3