Malicious PDF — malware analysis report

Static analysis result for SHA-256 31861899bc8b49b9…

MALICIOUS

PDF

43.5 KB Created: 2020-11-04 20:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d61ce97102b0068b7eef35fd3aceab91 SHA-1: cc31be8b3bda7559cc53f5de411de1d570f8ba24 SHA-256: 31861899bc8b49b9cd4bc8e6f47c99bf8135afeca3b322a45c2a76fad935d393
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=michael+kors+size+guide+shoes In PDF document text
    • https://jefapijuwenumik.weebly.com/uploads/1/3/4/4/134435530/volafixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383567/normal_5f98ed7489717.pdfIn PDF document text
    • https://jumofawulagap.weebly.com/uploads/1/3/4/4/134486933/4894436.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/jenadatutovabi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5f97ca4f8d60d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425255/normal_5fa29f6923b5d.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/fa2f78d2ccc06d0.pdfIn PDF document text
    • https://jotevalosovem.weebly.com/uploads/1/3/4/3/134385082/71e5f152c1.pdfIn PDF document text
    • https://favasebuwakule.weebly.com/uploads/1/3/4/3/134328846/nowodope.pdfIn PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/vamuxanoxeroga_voxibu_pazofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_5f97dcf329b3b.pdfIn PDF document text
    • https://medefanitinov.weebly.com/uploads/1/3/4/3/134386417/wisanuseve.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/mawafukutopopomu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006b03.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006b03.bin)
    • https://s3.amazonaws.com/zerejibixupav/civilization_wars_5_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/sanekufiwumafo/friend_like_me_aladdin_lyrics_ne_yo.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/hornady_load_data_6.5_creedmoor.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_off00006b03.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B03 5320 bytes
SHA-256: 827e077781649fcc267b5ceaf66b8cb5e1154cae5f1b1e8612354d678120a4ab
font_01_sfnt_off00007d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D25 10580 bytes
SHA-256: ba12a8c99cfa340ed8e3f748b01636589eac1f1079457ebe0bf14ff0a903dff4