Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c45a8e4d530ff5c…

MALICIOUS

PDF

42.3 KB Created: 2020-10-26 13:07:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 05ac677fc2382636d1be09f0fc97e897 SHA-1: 9c326d01248be1a4246920c120690295cf4fd3d1 SHA-256: 8c45a8e4d530ff5cdcdb2a3273bba95a6c429fccc1ef312e250de42ae2c7f4b5
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.link/pify?keyword=bob+sorge+books+pdf In PDF document text
    • https://nozudasukexip.weebly.com/uploads/1/3/4/4/134441991/bobemepaxumen.pdfIn PDF document text
    • https://joweralifaj.weebly.com/uploads/1/3/4/3/134350132/zokit.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/nizijowotugoredo.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/566c475588.pdfIn PDF document text
    • https://saxepuxuk.weebly.com/uploads/1/3/4/4/134472003/1365786.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/sivewisuvoliget_jabibaner.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/a47c99e54.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/4cf842764.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kubokujada-kijezubat-muxin.pdfIn PDF document text
    • https://kalodobig.weebly.com/uploads/1/3/4/4/134432105/8330377.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006318.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006318.bin)
    • https://s3.amazonaws.com/sugaguxagu/51051135661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c77ce191-7a2c-4a77-9a3f-22b583a64760/soduxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027131da-74c9-4722-9ad7-3e75f9619371/zizojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9da5e058-dde2-49e1-85fd-474bd31b7c9c/panic_the_story_of_modern_financial_insanity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c0ba02a-2144-4038-a811-1b69c91084c2/woluvuzixedozajenil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee003cf9-a687-4768-8941-3a3a7f1f1837/48365001128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbbbc08d-b2ac-448c-9de0-d6dbe2fdd819/vowusalevewekajekimuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57ffeff1-71eb-44f0-be94-80eb87f67e1e/plant_cell_coloring_sheet_colored.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02db9bfa-087c-4f04-a9d8-ee291d0a3c0e/wativun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eafdf139-1890-4ff6-bf1f-4a0afb418b5f/58087485053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6639be7-23d5-46b5-b152-b86b88ac1400/82629619182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1c5955-0a43-466f-be25-573981c15848/tusulokokapidegofewi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f441545b-64be-4e4c-b84c-7863ccc9ea37/hebbuli_songs_free_download_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf7aaa6-2151-427d-9af3-a8c968c5d423/el_burlador_de_sevilla_jornada_2_res.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 extracted file (font_00_sfnt_off00006318.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 5220 bytes
SHA-256: f704e7baacb6eecad68cf6b62b2e23b32d68bd60fe44c6e4e6fd5b9d2679512a
font_01_sfnt_off000074e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E8 11372 bytes
SHA-256: a32e4c8c9f748d066021949805751d0448218becfa291a41d857695df2e8879f