Malicious PDF — malware analysis report

Static analysis result for SHA-256 724fa9aa2f438431…

MALICIOUS

PDF

38.8 KB Created: 2020-08-21 02:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce87cc57649fc9381936327a4c6dce74 SHA-1: edd0ea07fbc85591b3799566d4f2d5ebb1a258a8 SHA-256: 724fa9aa2f43843112bd4b74d9fa2e63724fc7fa196be8c24e7794af5a496d14
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to what appears to be an SEO link farm designed to drive traffic to a malicious redirector at 'https://ttraff.com/pify?keyword=azbox+bravissimo+transformado+iks+2019'. The document body, though heavily obfuscated, contains this same redirector URL, suggesting the primary purpose is to lead users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=azbox+bravissimo+transformado+iks+2019 In PDF document text
    • http://files.birthtalks.com/uploads/1/3/2/3/132302711/5397876.pdfIn PDF document text
    • http://gisimo.gethealthyinitiative.org/uploads/1/3/1/4/131437736/8bdee07ead1.pdfIn PDF document text
    • http://files.oskfc.net/uploads/1/3/2/6/132695543/3641258.pdfIn PDF document text
    • http://bawiwu.elderresourcesofri.com/uploads/1/3/2/8/132814930/1295670.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/1/0427/8904/4383/files/68182636605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/61877932564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5075/2417/files/89436702215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/14097273318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/multiplication_table_worksheet_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/pibedusuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/aldington_death_of_a_hero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/xutipizemowifefezemit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7030/0065/files/77722687736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/fifijipabuvitovomuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/15122890306.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 4

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_off00004968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4968 5872 bytes
SHA-256: 40c511b149df4ee7cd48b9b786de83167e6bc576cb1a0bfff71cc3a3f356c930
font_01_sfnt_off00005d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D59 3788 bytes
SHA-256: 6f8e1151007d884f55234b3158f9ac8603957f0c8e66e5fbed4c3ee99e620268
font_02_sfnt_off00006bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFB 10384 bytes
SHA-256: 966547c550fd22785cdac772bef775c4a4e5c73d34bc64f7e04faed1911d638e

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