Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce413ea65809e30a…

MALICIOUS

PDF

49.6 KB Created: 2020-08-12 00:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: debfe79900013cbfd38d28d785d4989e SHA-1: bb8fef7d6da10d54d06de9de0f154c152ae8a9f5 SHA-256: ce413ea65809e30a8e883e54e82842137b3f50ab0b93dfa05f9345342b1a2261
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=angle+of+elevation+and+depression+problems+with+solutions+pdf In PDF document text
    • http://vorek.shopgirlcookies.com/uploads/1/3/1/6/131606407/jesigavobodaju.pdfIn PDF document text
    • http://files.heavydutymarketing.com/uploads/1/3/0/7/130739463/2145274.pdfIn PDF document text
    • http://files.paisca.org/uploads/1/3/1/0/131070581/3594776.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/1/0430/0115/1651/files/rimifebukufafepoveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/77105853889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8225/8334/files/keto_daily_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/tojavofoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2101/1865/files/adobe_full_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zetuvoveluganimuwejipas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/rakugenotixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/wotabikix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/38755068930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1621/4939/files/fofuzaturegarifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/joxuzexugifaverojulure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/21761003490.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_off00005fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB7 5620 bytes
SHA-256: 0fb67145aded1ab4438845a44d5693018f80a463f67849ecfbf4e2f0461fdfa0
font_01_sfnt_off000072af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 10260 bytes
SHA-256: 495ed24e8f1aa720b146a532b362497f10e03a59da051d5de3d246e6a046aeb1
font_02_sfnt_off000095ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95AE 16072 bytes
SHA-256: 062f8a7185608a18dbd56baf48eb14c791e3c6ea8866a2ddd6a03467109098f1
font_03_sfnt_off0000aa4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA4D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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