Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8f24e199219db4…

MALICIOUS

PDF

63.9 KB Created: 2020-08-14 15:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1d9d7044af4594e2eb611516af5c282e SHA-1: 1f69c0d2f6616145220a56691b6329f718487ffe SHA-256: 2d8f24e199219db4d1aad97da029c03b6002359d7fa46e3c0bc00a27043ac191
194 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.cc/pify?keyword=best+pdf+reader+for+studying+ipad In PDF document text
    • http://files.thechannelislandgirl.com/uploads/1/3/0/8/130814258/5451647.pdfIn PDF document text
    • http://files.alittlenautiorderingsite.com/uploads/1/3/2/7/132740241/sezivesakigudo_womiru_zapomo_betuk.pdfIn PDF document text
    • http://files.brushandbranch.co/uploads/1/3/0/7/130740344/2297158.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://cdn.shopify.com/s/files/1/0441/3951/1960/files/vajofogosovadavofekufad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/doviwulobodup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/jigiwurenebidetixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/3115328118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/ravasojumulepasotirawad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0178/4983/files/le_botulisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/92881113756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8202/8958/files/namexasogujovarenidifivas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/26109613694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/88400133660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8008/0801/files/vopokila.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9828 5208 bytes
SHA-256: 38e0195748c167b85093057ee1260e856c2247083aa333832d7351e665cba767
font_01_sfnt_off0000a9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9FB 10816 bytes
SHA-256: 28bf121e1b3ef2e88baa7f9fef8dbe776a3ab07c2b2e7a00ba196a00525911e0
font_02_sfnt_off0000cede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDE 16108 bytes
SHA-256: f2cdb932ee13b796740eb614e233a545327b697588f9e663f06ef4c88113e31b
font_03_sfnt_off0000e3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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