Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14f18a0c1e8fc2c…

MALICIOUS

PDF

37.4 KB Created: 2020-10-05 08:35:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d49eb95bee90bdb3be575d084d2222c9 SHA-1: b69de9b64b71c684a085f2d0247dfa6b81d35777 SHA-256: b14f18a0c1e8fc2c9922e2d90a37d7cf4800b78a9d7d17bd30c2b7eb39e7f4c2
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://cctraff.ru/strik?keyword=scentsy+nest+warmer In PDF document text
    • https://site-1038489.mozfiles.com/files/1038489/97003284644.pdfIn PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/84855922282.pdfIn PDF document text
    • https://site-1037196.mozfiles.com/files/1037196/61538381155.pdfIn PDF document text
    • https://site-1041608.mozfiles.com/files/1041608/jokotevaxo.pdfIn PDF document text
    • http://files.nurrd.com/uploads/1/3/1/8/131856992/5d34d8e8ac017.pdfIn PDF document text
    • http://files.frenchsommelier.info/uploads/1/3/0/7/130776279/8867ff14e0a737.pdfIn PDF document text
    • http://ditonoda.manosconesperanza.org/uploads/1/3/1/4/131453358/vizekalavovasorax.pdfIn PDF document text
    • http://files.coveredinjoy.co/uploads/1/3/1/4/131437889/6557514.pdfIn PDF document text
    • http://febexo.gcwellington.com/uploads/1/3/0/7/130738882/3850599.pdfIn PDF document text
    • http://muweve.theyogaschoolny.com/uploads/1/3/1/6/131606835/lofef.pdfIn PDF document text
    • http://files.thirdcoastpinballandgraphics.com/uploads/1/3/1/4/131438741/xunag.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/1/0437/7768/7701/files/21272184021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0881/1427/files/error_80710a06_ps3_pirata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/brother_xl_2600_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0236/4579/files/xojarerubogabaga.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_off00004805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4805 4840 bytes
SHA-256: b183d2d224c99142fb06e202fd6e64dbd7298857aed1365fb81986e91baf4d79
font_01_sfnt_off00005856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5856 10028 bytes
SHA-256: 479e6ca4a98588a49c2da3f0ae82e889c488f632c3e8b0cf2bab3af5d116a274
font_02_sfnt_off00007aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34