Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffc638c5e1649ac…

MALICIOUS

PDF

47.4 KB Created: 2020-08-04 09:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e2737250becb7a21e823725e87161d6 SHA-1: eec2d2115900024c2f4d7e718aaaee980b137082 SHA-256: 3ffc638c5e1649ac96ff94253e9982b6575c4dca510fb05f62d5d5dd608800a4
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body text, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=die+casting+defects+causes+and+solutions+pdf', which is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting malicious websites under the guise of providing information or downloads.

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.ru/pify?keyword=die+casting+defects+causes+and+solutions+pdf In PDF document text
    • http://files.simplycfood.com/uploads/1/3/1/3/131381679/supapinatopowu.pdfIn PDF document text
    • http://files.itinerariesofahummingbird.com/uploads/1/3/2/7/132740541/kuwetofisoma.pdfIn PDF document text
    • http://files.shopmilou.com/uploads/1/3/1/4/131483955/123771.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/1/0435/9274/5117/files/45881401376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/88635932089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/88048786484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/85865899861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0839/3369/files/26318893886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/bitewaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9568/5288/files/loxarenivogerudutifix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/rafexuvaririlexodefuguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3367/files/puxatapinojatidisakowubiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2230/files/40957217382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/how_to_run._sh_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/pinigotodunozojum.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E92 5108 bytes
SHA-256: 3a734a65a8ac6f93d66d9235dbcc4837d727848dbb45b55ebdee7cada9b19294
font_01_sfnt_off00008008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8008 10064 bytes
SHA-256: 61126c38bd09a61bbc6107f7851f6324ed41b645fa6c992e1663fa41317419d7
font_02_sfnt_off0000a25e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3