Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e56883fa9dbbb07…

MALICIOUS

PDF

44.7 KB Created: 2020-11-06 23:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 5ce634a2dd38b27d6003f704d0bc34c3 SHA-1: a0b3f94187d7ac5fca6fff05753ae1cf1f14a0f0 SHA-256: 1e56883fa9dbbb073941598ecabdd0f909c8697880cb74b6cb1ab5207dca1157
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffking.ru/123?keyword=trophy+water+guide+service In PDF document text
    • https://wanezevidika.weebly.com/uploads/1/3/4/5/134588498/9248300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447906/normal_5f9ea3fc83e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_5f9fc0289c488.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/ef8bde.pdfIn PDF document text
    • https://jesodiretax.weebly.com/uploads/1/3/4/6/134659119/sunurapap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5f953f27e4f60.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/jenagubadopi/what_products_were_most_common_along_the_colonies_western_frontier.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/54396913919.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/garuda_gamana_tava_song_lyrics_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/causas_del_abandono_escolar_en_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/counterfeit_gods_download.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_off000061af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 5280 bytes
SHA-256: dfd5d74a40e344ed85f94980c074cc6ebdc3573855fb79b1b0a2ed175e6d9aa9
font_01_sfnt_off000073da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DA 10760 bytes
SHA-256: 2cb9a9bb58024627f0ffc5f638d973b5376e1e2b9413ed192190c9a781276fce
font_02_sfnt_off0000984d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71