Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f1e53d47123d27…

MALICIOUS

PDF

78.6 KB Created: 2021-02-14 13:49:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: decce93b0f65579561e8c74781200ab5 SHA-1: 812f82db6237a3d9df6ced34e77e23052f285526 SHA-256: 38f1e53d47123d27823dfccf979104b401542852f15ea7e24c4383a2a9920ea2
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=gi%20joe%20movie%20parents%20guide PDF link annotation
    • https://cdn.sqhk.co/vefomatakin/7o7jchb/37266672680.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448551/normal_5fc9a4f7d3e3e.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/cgfGl00/deathworm_ark_ragnarok_spawn.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/jhgYMjf/dotefojigaxoripagakafisim.pdfIn PDF document text
    • https://cdn.sqhk.co/vuluzazogur/GZYgchd/12071063091.pdfIn PDF document text
    • https://cdn.sqhk.co/repejuvovod/N5hj6Nm/10_000_the_dice_game.pdfIn PDF document text
    • http://toxedixekerej.22web.org/divergent_book_ar_test_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425726/normal_5ff85a8de4484.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453337/normal_60079f731ac60.pdfIn PDF document text
    • https://cdn.sqhk.co/denobafopum/bNlhbbl/learn_bulgarian_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_6022cfa23de19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jobiduleger.epizy.com/aditya_birla_mutual_fund_factsheet.pdfIn PDF document text
    • http://ridexinawaje.epizy.com/how_to_write_a_report_essay_muet.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/mekamofotibematikudusuv.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/92574721679.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_off0000f8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A1 5412 bytes
SHA-256: 49d59b926edfbf8c91049caff07244ea49e03511fe68c8c7b0011725e73b0b76
font_01_sfnt_off00010afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFE 10132 bytes
SHA-256: 161b0aef6cc65ee6b45e6148ed649db3fbc0b20dd298032f53c9d68c4cd8e77f