Malicious PDF — malware analysis report

Static analysis result for SHA-256 56395575468733b1…

MALICIOUS

PDF

85.2 KB Created: 2020-12-22 17:12:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 349f57a77e0ec6331904037447dddcf4 SHA-1: c5134d18a5e4614ebf1a7ad9b4200f4ddc36031f SHA-256: 56395575468733b19b3bdcb725d5b01c0210ff928ccdb3739b815cf4bf74960e
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure referencing 'Roald animal crossing new horizons gifts' and a high-confidence heuristic firing for PDF_SEO_UTM_REDIRECTOR_LINK indicates a phishing attempt. The embedded URL, https://trafffi.ru/strik?utm_term=roald+animal+crossing+new+horizons+gifts, is likely the initial point of compromise. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?utm_term=roald+animal+crossing+new+horizons+gifts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477408/normal_5fa93a9d93daf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc153656609fd0ee79445da/t/5fc72368c953717e09d2b7c5/1606886249091/super_stickman_golf_3_hack_ios.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfce03c02f22b9dd3606f/1606286562476/fopefevowisuweteg.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/twitter_apk_mod_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/lojidox.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/all_the_pieces_are_coming_together.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/20455871789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6256e9ac-0c84-4b7d-88be-d0a884a27f5c/secret_language_of_birthdays_book.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/yabause_wii_channel_installer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a457649c-71f1-4baf-8e4e-ff2bf6fd01c1/kitowetusiroxekamuw.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/pure_love_eng_sub_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f092da6-1705-42ab-9541-00cd74d6e0c0/poppet_dolls_ebay.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/74666040013.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97D 6380 bytes
SHA-256: 4c1b4864fb791b4d29dc2e05a3d954cb204eba31c18d39fdc3cf122ee5fa1924
font_01_sfnt_off0000df3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3F 5372 bytes
SHA-256: d854d94fb52833712877fc3ed9f1bd52afbafc2b80ee963a5e4bc36af25934ea
font_02_sfnt_off0000f15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15F 10092 bytes
SHA-256: a9d3319496edd1243c03e4cb95b07e9fc994634baf7d9aaf09e93d6ee59bd711
font_03_sfnt_off00010df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF5 12944 bytes
SHA-256: bfa2c66f237d6d191edc7285e40cd7e8f22f340ef57ac6df311dd5c3ba3a6565
font_04_sfnt_off000136f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136F0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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