Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5d194461f32311…

MALICIOUS

PDF

53.1 KB Created: 2020-11-05 22:53:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: eca8518c062a227878dc0950eb714e60 SHA-1: 6ac115ab39e303d4ec4d9b391039195afb0f3ded SHA-256: 7a5d194461f323114a10b1242c5798a2c4d8280b5f5a90755b4e0f606f420409
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafficel.ru/123?keyword=dewalt+dcd985+manual PDF link annotation
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/tuwom_titupilum_megigawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f9a4625209db.pdfIn PDF document text
    • https://sigogaxeba.weebly.com/uploads/1/3/4/6/134620414/nudogesozovux.pdfIn PDF document text
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/wafomigijozekowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393631/normal_5f979b5f47551.pdfIn PDF document text
    • https://vudelugofede.weebly.com/uploads/1/3/4/3/134383428/2021425.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://s3.amazonaws.com/henghuili-files2/xezivumafilulob.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/78508067646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4724deaf-6c52-4219-b094-468d32a14247/what_is_bell_mobility_phone_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46412d56-d602-421f-92d5-30d18470aa22/99864330841.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/tumogikalofepotumifawer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a3a288-6acf-4093-b496-52033413533e/zefofuvixafitejijorufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5cc3606-a4a3-4252-9d79-6fecccf79696/purebofobadinurufezafusa.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_off00008226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8226 5100 bytes
SHA-256: b6453033bd162a48fab799ea2e20181b40d2c8c34075fd3c8b725766271e4e58
font_01_sfnt_off00009380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9380 10752 bytes
SHA-256: 7941ea522842410d1887031a4a2494a2bd99a34e5b854a1c8955d065698eb1fd
font_02_sfnt_off0000b843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB843 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2