Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c783914c2f64626…

MALICIOUS

PDF

40.6 KB Created: 2020-08-08 15:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc5e79dc7b09dea2d340164b957256b3 SHA-1: ac0ac3ab8f92dd391aecbafede1a099075231da3 SHA-256: 9c783914c2f64626f51eb64142bf51444a79dec36b9245ebc9d59baf0b58aec7
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a job description. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the target URL and keywords related to job descriptions, reinforcing the lure.

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/wb?keyword=care%20manager%20job%20description%20pdf In PDF document text
    • http://jawajo.beingbusiness.co.uk/uploads/1/3/0/7/130776131/9b0f2f.pdfIn PDF document text
    • http://files.graceub.com/uploads/1/3/2/6/132681880/7bdd9d78ad01.pdfIn PDF document text
    • http://files.ashleyparsonsyoga.com/uploads/1/3/2/7/132740415/newixebomufobezofawe.pdfIn PDF document text
    • http://files.lscodn.org/uploads/1/3/0/8/130874162/df5fd83b7330b63.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/1/0429/6212/4959/files/just_busted_cherokee_county_ga_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/18233603351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/dedagemoniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/friend_class_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/anemia_en_el_peru_2020_inei.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/19344981201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/64539844712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/kiwawefagoben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/wifetosaxewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/37741803289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/30418753722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3489/3718/files/bash_reverse_shell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/2335646514.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_off00006154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6154 5564 bytes
SHA-256: 19288c3505cf50b622b2a6c508505721cf834d26615d671521304365505b3b3c
font_01_sfnt_off00007429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 9816 bytes
SHA-256: d9f2d97a44f5a6d6471f7b12c6bff98f06eb06f0b30a6c4cc3da3ceb0eb30c78

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