Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c884073f8c8283…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 08:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7198b4c44dff9ba156d1c3ebdb4b7489 SHA-1: 3d433c6984254590fcf2e48b59e7d6c40ce3af3d SHA-256: f7c884073f8c8283139554238147c25622ad33dd2a37dd03beac4d697c587060
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation or to obscure malicious destinations. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=reporter+da+jovem+pan+em+brasilia'. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the attack pattern.

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=reporter+da+jovem+pan+em+brasilia In PDF document text
    • http://files.pst4y.org/uploads/1/3/0/7/130738814/piwagitasesesuwatug.pdfIn PDF document text
    • http://dexaw.gregoryscommercialcleaning.net/uploads/1/3/1/3/131398285/2252824.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/dilefopej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/tipufosawuvedejagiwenewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/19082162979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9170/6263/files/dreadit_movie_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/up_board_result_2020_class_12_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/xinunabaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/88944604968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/47656512252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/28029679651.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F3 5176 bytes
SHA-256: fcf11061e21dedbed2cdfc143980119e6e9a6951c179fe76ddb7f9b5e5ed380d
font_01_sfnt_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 10228 bytes
SHA-256: 00792385804900eef7582b805781ed01921b9447725d0d316d4010c2b5ad7f89
font_02_sfnt_off00008d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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