Malicious PDF — malware analysis report

Static analysis result for SHA-256 500a5ea2c8e18ef7…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 02:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8a2efc554c49fe455c4b66ff92d0ebd SHA-1: 0b96202f2812d743e1d055f62966faa5b44b35d0 SHA-256: 500a5ea2c8e18ef7657a74634ca8c6055b7e7c409f56eb5f6657945bd49a80e1
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, forming a link farm designed to redirect users to malicious websites. The primary malicious redirector is identified as ttraff.ru, which is used in conjunction with keywords like 'padma shri award 2018 list pdf' to lure victims. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf.

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.ru/wb?keyword=padma%20shri%20award%202018%20list%20pdf In PDF document text
    • http://files.esoterichealing.com/uploads/1/3/0/9/130969790/9baa326593813b3.pdfIn PDF document text
    • http://wutir.racheltepfercopeland.com/uploads/1/3/1/8/131871921/nanazimeto_rupuzu.pdfIn PDF document text
    • http://files.quillviolet.com/uploads/1/3/0/8/130874493/jaleximopolez.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/1/0437/7752/3861/files/vuwokawelelibejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3817/8471/files/sojulizuvoweli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/zidaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/padabavaxiwowoladinitoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0299/4586/files/52506468329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/muzezawuraxezazidowogow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/xodamomoxokekegasisax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6368/0932/files/discrete_mathematics_7th_edition_richard_johnsonbaugh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/wobine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0517/4179/files/capricho_arabe_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/44391016318.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D75 5896 bytes
SHA-256: b321ece404ac45745f2b8e87a25712abdd9651524a52e887d13dcd2abc4d140c
font_01_sfnt_off00007179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7179 9852 bytes
SHA-256: 7030bcd56d6455930fc4d389f0aaf37989eecb7a25ee3692203d933090033447

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