Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb77448d352dfb26…

MALICIOUS

PDF

49.8 KB Created: 2020-08-28 04:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3535cab1979ae3eb03b90599910acbc7 SHA-1: 4883d7a4b8c127ffc8762d0a6197c97f640ee9d2 SHA-256: fb77448d352dfb263dde0a561a2d4fffb22a83c1ebb6b2b62d0d7039b8ff0f4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL and other Shopify links, suggesting a lure to external content. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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=peugeot+307+break+ann%25C3%25A9e+2006 In PDF document text
    • http://files.ames-center.com/uploads/1/3/1/6/131606260/dugiwufuka_purefefozem_fazixojakifosa_labexol.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/1/0438/3657/1808/files/autumn_leaves_piano_comping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6232/8472/files/87871928468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6844/0232/files/equation_of_motion_by_calculus_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/rirobegelududojenoxemif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/rekefomekijadunowirelar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/22555204780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/sudinonimaxog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/barashada_luuqada_carabiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8443/2038/files/bread_making_ingredients.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/jebamuzeside.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

Related samples 8

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_off00006a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A70 5660 bytes
SHA-256: 6fc1dc396359176e5c0c9dec8ab687b15bf926b06b1f31b4fa523f6db3f4dbe8
font_01_sfnt_off00007d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D84 12180 bytes
SHA-256: 9ddaeaaff0b39530f84f12eec57b25508928f51dc8bdd8a206ad5cf405bd7e7b
font_02_sfnt_off0000a3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B3 16060 bytes
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833

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