Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd05d5a055a3add…

MALICIOUS

PDF

46.0 KB Created: 2020-10-07 13:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ab218ad24ac23011329eefc2dbd2af3b SHA-1: f52b4752b80660274dad27b7d4b8222a7ac979a2 SHA-256: 1fd05d5a055a3add12d4f04a1fbbe8813e635ffe9f37c19dbfe861cbdbce94bf
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://gettraff.ru/strik?keyword=advantages+and+disadvantages+of+extended+family+pdf In PDF document text
    • https://site-1039375.mozfiles.com/files/1039375/lalod.pdfIn PDF document text
    • https://site-1039341.mozfiles.com/files/1039341/gowalemanogivugulazekawa.pdfIn PDF document text
    • https://site-1040179.mozfiles.com/files/1040179/59418539256.pdfIn PDF document text
    • http://files.frenchinosathome.com/uploads/1/3/0/9/130969573/demiramuzobuzomuze.pdfIn PDF document text
    • http://files.catyoung.net/uploads/1/3/1/4/131452861/ludiruxonof.pdfIn PDF document text
    • http://guwog.mrwildy.com/uploads/1/3/1/0/131070458/7587c45ae75438.pdfIn PDF document text
    • http://guwom.teachingconnections.net/uploads/1/3/0/7/130775565/890032644b3e291.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/1/0496/3283/7796/files/17288442418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9834/4097/files/el_dorado_meaning_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9065/0306/files/penizuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2499/0363/files/words_in_a_pic_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9130/3829/files/saints_row_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3722/4860/files/falice_navi_da_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/tidipuvidurok.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 5272 bytes
SHA-256: 6e604e30c56206984d0d73cb5a6d4bc947f8414328c73874c8d5c7c6f28b9acb
font_01_sfnt_off000079c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C6 10164 bytes
SHA-256: be442299544b8bb03a3f66185aff5c00abd5dd123cff6cad6c43877bc5697eee
font_02_sfnt_off00009c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C95 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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