Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41689c3ea000951…

MALICIOUS

PDF

65.0 KB Created: 2020-08-11 13:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ff06dee20327110e2f04f8036fe3629 SHA-1: 357fbd4a7d80e65239b6c50f4fdfedfe90bd2a7c SHA-256: a41689c3ea000951613ba9e6ac2473194cb3d73c2706d028c54ef9329a577eed
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', indicating a malicious redirection attempt. The presence of a 'download button' heuristic further supports a lure-based attack pattern. While the document body is heavily obfuscated, the embedded URL and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic strongly suggest the intent is to lead the user to malicious content.

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.com/wb?keyword=periyar%20books%20in%20tamil%20pdf%20free%20download In PDF document text
    • http://files.psusdscience.com/uploads/1/3/1/3/131384771/73359.pdfIn PDF document text
    • http://xadadifu.theolivercurdtrust.org/uploads/1/3/1/1/131164250/805824.pdfIn PDF document text
    • http://files.doubledatepacking.com/uploads/1/3/1/1/131163684/lobal_sepap_bexim_laxenomawezimev.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/1/0434/4892/6364/files/benowowuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kixekitigatozodevejale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6738/3712/files/pupugijujosulalebajul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/xijus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/adobe_photoshop_cs5_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/jewuwunadufigomil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/57071012746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8930/5506/files/moravia_il_disprezzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/this_boy_s_life_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/legifig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.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 3

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_off0000bdc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC5 5588 bytes
SHA-256: 3c103626e23bc88b4d021c5e0d97c417c16e87b4a61b94ac015d88ec4afa3d3f
font_01_sfnt_off0000d0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B9 11308 bytes
SHA-256: dd8408992946cc34d120563f8c3c6555f4318dd49ecd6a95f3d407626f042813

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