Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf2a14b5f052532…

MALICIOUS

PDF

49.5 KB Created: 2020-10-04 01:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ec1459f87212b14057460d8489f8a9dc SHA-1: fcdea655d31da9bc52c498105321d957f0f1fff8 SHA-256: 9bf2a14b5f052532a07a76f0e6f239fb20758484b22de5c8d4876648b87302f0
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=axe+fighting+techniques In PDF document text
    • http://doliwi.silverjewellerybypeterkibbles.com/uploads/1/3/1/8/131871518/d39bb5af2b0.pdfIn PDF document text
    • http://files.nwhsfootball.com/uploads/1/3/1/4/131437308/wuvokubi.pdfIn PDF document text
    • https://site-1036697.mozfiles.com/files/1036697/34630890152.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/pabelimerezesojuv.pdfIn PDF document text
    • https://site-1037864.mozfiles.com/files/1037864/xilulutawulineredezavuw.pdfIn PDF document text
    • https://site-1043790.mozfiles.com/files/1043790/dijunesuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2092/files/14183511575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/arduino_projects_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7973/6223/files/relafelogajifes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5529/8213/files/d-bal_vs_dianabol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9683/6758/files/latuwirepuzegobogazugab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4577/files/bazoronutufasasofev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3962/9205/files/detective_conan_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5304/6165/files/printable_circle_of_fifths_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/the_bear_and_the_dragon_free_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

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_off00006b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B65 7840 bytes
SHA-256: 27ff27583ce1453b97772130e3200905a8cb383976208d898e74783c2e872276
font_01_sfnt_off00008572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8572 4988 bytes
SHA-256: 257e303ec9b11c540fc01df417e40e6d558a12e01b40166602284e5ee7fc4f7b
font_02_sfnt_off0000967e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967E 10104 bytes
SHA-256: 3eca85d249f4eaf6fc6ed509c2f88ba891db43e232a4e7cd81c1be5acf12c60d

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