Malicious PDF — malware analysis report

Static analysis result for SHA-256 683544ded7fa3311…

MALICIOUS

PDF

129.6 KB Created: 2020-07-31 08:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca0251623491100c640efbe208841ea6 SHA-1: 0163fc58d5309eaeb800376adeec62c39b0d17f5 SHA-256: 683544ded7fa3311b18cf7ad1e2a5e448f388b7fe0fa26584a295c595acd95e6
234 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free downloads, but they redirect to malicious infrastructure like 'ttraff.com'. This is a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, and 'SE_PASSWORD_ARCHIVE_LURE' suggests a common method for evading gateway scanning by requiring a password for a subsequent archive. The ML classifier also strongly indicated maliciousness.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=caracteristicas+de+las+bacterias+pdf In PDF document text
    • http://files.edsworldwide.org/uploads/1/3/2/7/132740320/sotilemiz-gukixedesimujar-bevulas-lativeponeji.pdfIn PDF document text
    • http://files.zanyunoodles.com/uploads/1/3/0/7/130739381/sikete-wemotuta.pdfIn PDF document text
    • http://files.sumovillarica.com/uploads/1/3/0/8/130814258/jekux.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/1/0432/8911/6836/files/fazixumaropulelozuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2011/6380/files/topufuzuxitovijas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/zawaxobowizedanovow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/mojuwexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/10888479105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/wujerafilenasuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/94214557792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/tilat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/judalajosefup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/dakawad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/30109047081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/74831741970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0607/4780/files/37752983999.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_off0001bdb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BDB8 4884 bytes
SHA-256: 6a31b7f2f4199cb3cb3af24159c4d92a7ec90db4a2b9366ed70c202b8dce4c62
font_01_sfnt_off0001ce5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE5D 13124 bytes
SHA-256: 36fd53ac055dff7398dda5a5db78b251b271d1761e56a21a8c230d0b33a92d3c

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