Malicious PDF — malware analysis report

Static analysis result for SHA-256 f51398c53754a437…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 08:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c76a42d48db1916be64b40c54e4f06aa SHA-1: 80ec1b78b04cc486258d29df47ce869c470960b4 SHA-256: f51398c53754a43743e7c5729b12c4d1352d4d6da53397b3a3e739b9ba525fc3
202 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'free printable hand puppet templates' and includes the malicious URL, suggesting a social engineering lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or improve SEO for malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=free+printable+hand+puppet+templates In PDF document text
    • http://files.computerzone1.com/uploads/1/3/1/4/131437475/wetamogete-nosubis-niduzavorekufa-laronezugufuman.pdfIn PDF document text
    • http://files.charlottecblack.com/uploads/1/3/0/9/130969427/2798aa03b0e19.pdfIn PDF document text
    • http://files.estelleasselin.com/uploads/1/3/1/3/131383727/7207a283b454d.pdfIn PDF document text
    • http://boneso.stfrancesbasketball.com/uploads/1/3/1/4/131453741/f71994dc8.pdfIn PDF document text
    • http://files.rwspeech.com.au/uploads/1/3/1/4/131408364/dd3fe6afa4e53.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/1/0430/4646/9793/files/rimiraxominufonot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/kiwewumufozenajab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9815/files/mineral_identification_gizmo_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8215/4135/files/38409296621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/bergamota_doterra_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8012/1506/files/adding_and_subtracting_polynomials_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/she_s_so_unusual_album_cover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/animate_cc_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4854/2109/files/jitesoxudusuruzadovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/febojax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7852/4831/files/77982124526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/15050984977.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6C 5292 bytes
SHA-256: 8b378cd079fa747fc007ee4a0e1a3b223b9baaadb48a65b02a7dd3b0f6abd2e1
font_01_sfnt_off00007e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E26 10272 bytes
SHA-256: c2d788417485a9c44d534838fe13791fd2b9486dff2c056757fe415a48dbe49e