Malicious PDF — malware analysis report

Static analysis result for SHA-256 506bab9c561b47a8…

MALICIOUS

PDF

42.3 KB Created: 2020-08-09 17:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6de0fd89b431c30ef29ee7c4679c0ddd SHA-1: 8c2678623a804bf23e56470017955c5f68c5637b SHA-256: 506bab9c561b47a800fbd48323e30ba887b0bb34ff764174b43805cf097d6542
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and appear to be part of a link farm designed to manipulate search engine results. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. The presence of numerous links suggests an attempt to drive traffic to malicious or compromised sites, likely for phishing or malware distribution.

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=mathematics+content+methods+meaning+pdf In PDF document text
    • http://files.ecobotsupport.com/uploads/1/3/1/8/131871692/d3f736.pdfIn PDF document text
    • http://files.abxs.org/uploads/1/3/0/7/130776150/nomat_piwunod_voniboxero_manej.pdfIn PDF document text
    • http://gukujob.harkback.org/uploads/1/3/1/3/131378776/xezinalu.pdfIn PDF document text
    • http://files.rhssoftball.us/uploads/1/3/2/8/132815807/nuferisenir.pdfIn PDF document text
    • http://files.longviewpaws.org/uploads/1/3/2/6/132681219/xiduwitub_ledota_vivupelu_jivek.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/1/0434/0698/3318/files/brew_install_python_3._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/99724009127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2456/9752/files/21406251403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/bifififibelozaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/anti_aromatic_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/86181681004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/zekusepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5789/files/sugujufev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1619/2153/files/numovuzaraxavefakadip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/fetexewifebarapag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/kusefotuxalenerememo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/zagabepikovem.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 6

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_off00006787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6787 5444 bytes
SHA-256: 6c4f67691704a3bd09a27a395ed47ad7f972ba06e9193b52c5b57ae861cac93e
font_01_sfnt_off000079ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FF 9944 bytes
SHA-256: 1aec21c6f37b2a65c36c51d409c3560b7a005849fda82f9ab81cd8f5c48ad9e4

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