Malicious PDF — malware analysis report

Static analysis result for SHA-256 226fe7ff5b948939…

MALICIOUS

PDF

42.1 KB Created: 2020-11-06 19:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: a13916211b364b674676284ddbf2555a SHA-1: b245a17099c6d4e48a6401926b677839a8a6a380 SHA-256: 226fe7ff5b948939908cfa1a40edb3d6f65ee8312987b05ea69ce12b7fabd4ac
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://trafffi.ru/aws?keyword=ustvnow+plus+apk PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/36ce75ac.pdfIn PDF document text
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/majasisekin_sevijagomaso_fiwulawuf.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/abf7257efc49.pdfIn PDF document text
    • https://bujupovira.weebly.com/uploads/1/3/4/4/134472582/bopoxatidu-banor-damidaxol-zanerun.pdfIn PDF document text
    • https://devomejot.weebly.com/uploads/1/3/4/4/134491467/2218255.pdfIn PDF document text
    • https://xukaxikerebata.weebly.com/uploads/1/3/4/0/134042698/8b0b4106248.pdfIn PDF document text
    • https://muwidewosavuli.weebly.com/uploads/1/3/4/4/134435377/7677539.pdfIn PDF document text
    • https://gizojobov.weebly.com/uploads/1/3/4/4/134436228/lufewu.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://lunipudazu.weebly.com/uploads/1/3/4/4/134462877/52eaab5f1e089.pdfIn PDF document text
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/13f365bff0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/99011785001.pdfIn PDF document text
    • https://petivubeso.files.wordpress.com/2020/11/79638912372.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/31227779044.pdfIn PDF document text
    • https://sibamefekin.files.wordpress.com/2020/11/firumodaro.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/sonic_scene_creator_3.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_off00006543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6543 4924 bytes
SHA-256: 9c7f359bee7a0387609507b0fc42dac75e06c5b97adf62f954008757d94ca5ff
font_01_sfnt_off00007633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7633 11020 bytes
SHA-256: 9e2b10af446724f628fa2139a9ca2d99d3b7f229a64c12ab749423cc274fe1ec