Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6737e7cffe4ef91…

MALICIOUS

PDF

51.5 KB Created: 2020-10-06 17:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6f2709f62d37ca4c4f49278e3a43a649 SHA-1: 8dbaa481396e2f40acbebf2b0caf5ef7f04dc4a4 SHA-256: e6737e7cffe4ef919bce08aa23df0c7d3e8a17058cb70b052944bd92d170d824
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=bluetooth+multiplayer+games+apk+download In PDF document text
    • http://xakis.writteninwood.com/uploads/1/3/2/6/132681337/pizaf.pdfIn PDF document text
    • http://files.cnwspecialties.com/uploads/1/3/1/6/131637038/3384071.pdfIn PDF document text
    • http://files.prettysbeauty.com/uploads/1/3/1/4/131483265/87f687.pdfIn PDF document text
    • http://files.sboaschoolmdu.org/uploads/1/3/1/6/131606502/foxotakipib.pdfIn PDF document text
    • http://torokor.junglelakelabradorlodge.com/uploads/1/3/2/7/132741099/lovovomorusaf-difisimapufinid.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/zejojozokaziwijos.pdfIn PDF document text
    • http://files.kevinportmann.com/uploads/1/3/1/4/131453610/nalado-galabujosafo-kisoxu.pdfIn PDF document text
    • http://files.explainitagain.org/uploads/1/3/1/8/131856079/bf22cf.pdfIn PDF document text
    • http://pevazibin.lcandlepress.com/uploads/1/3/0/7/130776082/deserivum-vajikijirixa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3825/6535/files/hot_wheels_sizzlers_price_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5990/4157/files/patito_juan_cancion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6327/9255/files/micro_brick_battle.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C70 5560 bytes
SHA-256: ff9f5414b360f22920aee895b210458f84cc6b441a029578fab7880f189ce1b7
font_01_sfnt_off00008f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4D 10436 bytes
SHA-256: 0e65888512e1f4a9ffcba494f7ede5e6a3881fbd2bdceda139720c4c96c6faf1
font_02_sfnt_off0000b2f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F6 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230