Malicious PDF — malware analysis report

Static analysis result for SHA-256 f83c0b19526c4945…

MALICIOUS

PDF

71.9 KB Created: 2021-02-15 00:15:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6232372b6d4627df5dcbeec69b794fb3 SHA-1: a2e8186e290885575539779913df4c487fdb5bac SHA-256: f83c0b19526c4945482d46d466de8fdd61355fb4d648be804e69099858ede092
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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://leonvi.ru/wb?keyword=fiesta%20online%20fast%20leveling%20guide PDF link annotation
    • https://basavorulifa.weebly.com/uploads/1/3/4/8/134899730/60a8aad.pdfIn PDF document text
    • https://xamoxuwubedus.weebly.com/uploads/1/3/2/8/132814415/luvebi_jarifave_vejadatexebumu.pdfIn PDF document text
    • http://therarbooks.com/cambridge_academic_english_level_c1nnlqz.pdfIn PDF document text
    • https://texexodova.weebly.com/uploads/1/3/0/9/130970004/5272569.pdfIn PDF document text
    • https://fenogelojana.weebly.com/uploads/1/3/4/9/134904444/kebexuseripo_bixafe_namuxosod_zavuvobubunuzar.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/Qgfkjf2/78364375229.pdfIn PDF document text
    • https://dadojunolibete.weebly.com/uploads/1/3/2/6/132683289/7786506.pdfIn PDF document text
    • http://frukt.fun/supermarket_flowers_lyrics_videoozmn4.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/hbjiLAc/godus_wars_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401971/normal_5fedaa4df39e8.pdfIn PDF document text
    • https://funifagokose.weebly.com/uploads/1/3/2/6/132681236/baa6c44e46.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/ijihLgh/bird_dog_breeds_that_don_t_shed.pdfIn PDF document text
    • http://anyita.space/bakers_square_nutrition_information1lhs6.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/buguwevogevejejisuri.pdfIn PDF document text
    • https://guxitokos.weebly.com/uploads/1/3/2/6/132681611/fupajidigiwigubalisu.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_off0000dca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA9 4992 bytes
SHA-256: df935a5a94bb8abe5af583dc3362496bdae943e9addcd4453c68e65e393f8707
font_01_sfnt_off0000edcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCB 11148 bytes
SHA-256: 593fd2520eaa2abfc57e5e0101ca2f2760128f69d91b63e6b98615afdfe1acc6