Malicious PDF — malware analysis report

Static analysis result for SHA-256 309f15f85e982728…

MALICIOUS

PDF

63.1 KB Created: 2020-08-05 15:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1326c6d86e8cfa3287de6c2ee7f5796a SHA-1: 61bd1372de024f5d16b4e9907f8d89a7325363a4 SHA-256: 309f15f85e982728efb13856996ccbc408a69682d563a5eb275a706efc983d9a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to a 'Brunei travel guide pdf' and includes the malicious URL. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=brunei+travel+guide+pdf In PDF document text
    • http://files.tloveradio.net/uploads/1/3/0/9/130969041/jusubuteb-pifefob-pofuforosu-pokilujoxab.pdfIn PDF document text
    • http://files.dazcoautobodyclips.com/uploads/1/3/1/8/131871730/mirubuti.pdfIn PDF document text
    • http://files.kites4fun.com/uploads/1/3/1/4/131407194/72a1d1c8b.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/1/0430/5816/7959/files/vatizuvuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/gujalefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/dawijazelaxadunuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/kabbalah_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/30818952188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/94716195490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/vupilisut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/jadiferubag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/5441443651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/savudikivojimubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/simone_de_beauvoir_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/the_dark_knight_rises_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/boiler_handbook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6578/files/fleetguard_filter_cross_reference.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 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB948 5140 bytes
SHA-256: e0988bf104a0b00d4328d1be88761b4cc2553b7f7d63f151932fa594c4234cd4
font_01_sfnt_off0000cae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE3 10764 bytes
SHA-256: fa3e9ca199c628aaa738cca8f8f8b9cab5d7b586c881f4343dd4b81fe40acf47

Open this report in the interactive analyzer, or submit your own file for analysis.