Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10d57dc4f1b148c…

MALICIOUS

PDF

50.8 KB Created: 2020-09-13 01:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8ad47ddcbbf8d1bcb57b0025f05107e0 SHA-1: ab9bcd3a13fa9ca6c67ce56b49c0440ea81cf106 SHA-256: f10d57dc4f1b148c25d686f3d3ea228f5cc64c1a68c111a28aacb4039eabcee0
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.club/pify?keyword=toro+recycler+22+manual+troubleshooting In PDF document text
    • http://files.mindandbodyfitnessaus.com/uploads/1/3/0/8/130874175/sirerexakin_lonabuw_dasajipide_vozow.pdfIn PDF document text
    • http://files.wtcflashback.org/uploads/1/3/2/6/132696104/2756759.pdfIn PDF document text
    • http://files.taymun17.org/uploads/1/3/1/8/131857690/ad63888.pdfIn PDF document text
    • http://files.johnstownrecycling.com/uploads/1/3/0/7/130740118/1092023.pdfIn PDF document text
    • http://files.awordontheword.tv/uploads/1/3/1/6/131606284/zafenalufef.pdfIn PDF document text
    • http://files.estherleecounselor.com/uploads/1/3/1/4/131453610/xizib_mupowes_kokowikikiju_selener.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/rosajolasazukuriganuzalen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/abdullah_calan_kitaplari.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2118bb7747e146ccbc5113a3c7f1e372.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ab059d_c649bd997df9449295cd3b0fe94dfb23.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eaf48f_e6308f0078bb41c18477a882aa1bb258.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_off00008737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8737 5536 bytes
SHA-256: cf35a118dacb2495aa38e6204c6ce6171ff1db2754502fde8f1481e748c4a29c
font_01_sfnt_off000099e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E6 10744 bytes
SHA-256: c43269bcc0b30ad5f53090bd1b2c9f8fc885ed1eaea64604413bfd2238f7eedf