Malicious PDF — malware analysis report

Static analysis result for SHA-256 8918b2e1ba736d4a…

MALICIOUS

PDF

56.3 KB Created: 2020-08-17 06:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9887277b01124041531dbd1a3037f5b6 SHA-1: a880a7fb8125b933d9351936e3959b9610bc63aa SHA-256: 8918b2e1ba736d4a34b17534715477341214f576dbe3a718053cb25adb64c35b
202 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links designed to appear as a download for a book, but they lead to a redirector service. The redirector, identified as `ttraff.cc`, is known to serve malicious content. The document's structure and the presence of numerous external links suggest a phishing or scam attempt to lure users into downloading potentially harmful files.

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=arihant+computer+awareness+book+pdf+free In PDF document text
    • http://files.olasazulescostarica.com/uploads/1/3/1/3/131378915/lomet_riduzedi.pdfIn PDF document text
    • http://files.herbfire.com/uploads/1/3/2/6/132695575/4314310.pdfIn PDF document text
    • http://files.jmbensikdesign.com/uploads/1/3/1/8/131856232/4cd8fd6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/65067706846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/list_of_assets_and_liabilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/porapizelibepufatodinin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6588/4313/files/whatsapp_gold_free_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/demite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nofalefupipalivudekim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38461358607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5355/5607/files/kitugegoxurerokexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/calendrio_perptuo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD6 5648 bytes
SHA-256: a6b379af023de36f882d5e71661f1fb9e69857ca758db5874236ea7fe6e86455
font_01_sfnt_off000080d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D4 2116 bytes
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
font_02_sfnt_off00008aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA0 14728 bytes
SHA-256: 091b3971598bc76889deeb0f445d9c82f997322c21c21a8a90d9e89bbaf12957
font_03_sfnt_off0000b838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB838 8120 bytes
SHA-256: 73b974129f72fcf9196afb5cef55bcf25245455c74e72e6933e11155d77994c8

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