Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf9fcafcde8dd38…

MALICIOUS

PDF

40.2 KB Created: 2020-08-05 10:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57a734ad2e8f7b963e5ce6ef6cfa0302 SHA-1: 0b8dfe6851e880e200e5fad53a825f1d658ee688 SHA-256: fdf9fcafcde8dd38ee309470aca0dd7f2edafcb9dbb2b0c269ebae4d6cf8a6f4
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body and embedded links suggest a tactic of using seemingly relevant document titles to entice clicks. The presence of numerous external PDF links, many pointing to benign Shopify domains, indicates a potential SEO link farm strategy to obscure the malicious redirector. No scripts were extracted, limiting the analysis of further payload delivery mechanisms.

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.cc/pify?keyword=data+mining+concepts+and+techniques+4th+edition+pdf In PDF document text
    • http://files.tahoegoogletours.com/uploads/1/3/1/4/131437194/mawalapujupebag.pdfIn PDF document text
    • http://files.sweetdreamsweddingflowers.com/uploads/1/3/2/8/132814272/5436741.pdfIn PDF document text
    • http://files.adamwilliamchalmers.com/uploads/1/3/1/4/131452961/sanemapuzul.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/1/0427/6197/8023/files/how_to_make_beetroot_soup_in_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/pf_withdrawal_form_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1543/7468/files/meluwuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/operations_management_10th_edition_krajewski.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/82679228666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/69369400351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/43272131949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/suguke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/sunozotarogamovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0421/3917/files/hindi_ringtone_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9613/8137/files/tukariwilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 5652 bytes
SHA-256: d8f3f4a93029373a785bd73445638af045203a56f9caa1b3a6912726763e4015
font_01_sfnt_off000071f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F2 9860 bytes
SHA-256: 56b67c1e6b21e6e158e8ef203b0583985adc6807478120b8e0fc14eb73c8af1f

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