Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18d1fafd4e9413f…

MALICIOUS

PDF

75.0 KB Created: 2021-01-23 10:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ccc8c2860adea59bbe98b783873775e6 SHA-1: e357b3fbd461285e8530cce87e5d4d1a5bbef158 SHA-256: b18d1fafd4e9413f980d0b67d5895f0dfdb10b83445d3d53048af5eba0a85e6d
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://leonvi.ru/aws?utm_term=spss+modeler+algorithms+guide PDF link annotation
    • https://site-1083588.mozfiles.com/files/1083588/goxadarurutowo.pdfIn PDF document text
    • http://dixunawizodel.iblogger.org/85546887662.pdfIn PDF document text
    • https://site-1194623.mozfiles.com/files/1194623/gagutatujonatu.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/H5ihghd/getiwi.pdfIn PDF document text
    • https://site-1176262.mozfiles.com/files/1176262/your_song_piano_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/gixofusofago/hcfBXhb/novofonitarub.pdfIn PDF document text
    • https://site-1167953.mozfiles.com/files/1167953/japigimedizirifuwavuw.pdfIn PDF document text
    • http://bitipusefotas.66ghz.com/52188319260.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/jhyhewE/megan_thee_stallion_shooting_facts.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/kosipefojaw/animated_movies_2016_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/identity_v_female_dancer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/dekisudadiwepudiveb.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/botany_objective_question_and_answers.pdfIn PDF document text
    • http://kugunimekuxaf.epizy.com/80341249626.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/favicon_in_css_stylesheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/pixark_free_full.pdfIn PDF document text
    • http://sipariwemarisu.rf.gd/chevy_truck_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/44480755976.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_off0000e8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 5476 bytes
SHA-256: 46969f7305175b921e898e155303289191c03bde030ad2625f382fdd12ad8b27
font_01_sfnt_off0000fb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 10508 bytes
SHA-256: a9c97ca9803751264c15d7800fffc59f17565a294e9cfe6ae44529845e9584c4