Malicious PDF — malware analysis report

Static analysis result for SHA-256 772aa21f3fa9b29a…

MALICIOUS

PDF

53.6 KB Created: 2020-07-27 18:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 182844cc14afd3967246c7cc505100aa SHA-1: 26b25f65dd24051fecfc57ab724e49cf0050f2b9 SHA-256: 772aa21f3fa9b29a177634a327658d3fd17e91c335ca2e242baaa454521aafdd
194 Risk Score

Malware Insights

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

The PDF file contains numerous links designed to appear in search engine results, leading users to download other PDFs. One of the primary redirector URLs, 'https://ttraff.com/pify?keyword=adventure+of+tintin+game+apk', is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to a game. The presence of multiple external PDF links and a malicious redirector indicates a phishing or malware distribution scheme.

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=adventure+of+tintin+game+apk In PDF document text
    • http://files.ccstudioinc.com/uploads/1/3/0/7/130775772/7363538.pdfIn PDF document text
    • http://files.lavenderandleaves.com/uploads/1/3/1/4/131452817/b2ad10.pdfIn PDF document text
    • http://files.federicabruni.com/uploads/1/3/1/3/131381919/195876.pdfIn PDF document text
    • http://files.ailiniwan.com/uploads/1/3/1/4/131453919/fuzewilijoki-worisavufisite-rexara.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/1/0432/4678/0566/files/falubisudamak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/84286832964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2742/2632/files/luwarazapijojipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/najojeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/14700395247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2855/3634/files/toxata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/sumotazunemutalumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/wevamukazuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/xusupolevuliminogolikeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/jarerijudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/95416088241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/pijuvudoba.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: federicabruni.com 4 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7200 3192 bytes
SHA-256: 92af3c2d9db9758b70324d13fcc7d4eec65cf83e412b69b88a97272208e03911
font_01_sfnt_off00007d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D70 5148 bytes
SHA-256: 68accb1e45bf013b927c3b485c3aecb4e000d1123f49c8690196059765efd9dc
font_02_sfnt_off00008ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE3 10236 bytes
SHA-256: 628b5dd3e4e838f6ccd3a9c4d0d2804cb22a76a6d1795cf0f2a9ba27169d1802
font_03_sfnt_off0000b230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB230 16468 bytes
SHA-256: 357f999a46d43fc8b12d51a464b1263942ba694969a686154d44496feaf0877d