Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a04a5f6acc4f73e…

MALICIOUS

PDF

56.2 KB Created: 2020-10-25 16:28:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 1093be9d795e78211b277c79e228f117 SHA-1: 2d1e9cbb89b2030a4029c4c2157ae2ff8e55c085 SHA-256: 9a04a5f6acc4f73e98be932f19a451d0a2e16c77ded986e2421e59882db0cd69
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://gettraff.ru/aws?keyword=sap+bpc+10.+1+embedded+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5f8ad5fa8582d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_5f89406fefece.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f8743ce11dae.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/bededuxotulapil/carbonate_sedimentary_rocks.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/castelnuovo_tedesco_fantasia_op_145.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/periodic_table_crossword_puzzle.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/antiinflamatorios_no_esteroideos_aines.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/soribobowax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf2e4cf5-3b40-4692-9d66-d1cc4b420824/ralukideg.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/zisufalexerewolawe.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/fakipojitobapapojewu.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/chordata_and_non_chordata.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/sour_grapes_of_wrath.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/88066787250.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/apoptosis_physiology_and_pathology.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/altistart_48_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/mms_cet_2019_result.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/24067180270.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/abstract_reasoning_sample_test.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/98923417278.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/complete_palmistry.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/calistenia_ejercicios_en_casa.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_off00009061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9061 4908 bytes
SHA-256: e86c2125aa40ef5428c6aed7abeef13f2d72a550ccfbf812672853f86d64f60a
font_01_sfnt_off0000a10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA10C 10580 bytes
SHA-256: 70f5266ac48f0ea73d2f7de52b909ebf213fbccb8c4a1935fbf0f52e1398cb8a
font_02_sfnt_off0000c4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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