Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3cae55fda4414f…

MALICIOUS

PDF

61.9 KB Created: 2020-08-09 00:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47d62658fb6ffa9e8f63a56f779e0ee5 SHA-1: 3331db867ddedfdac915404b963a8a9f1f325956 SHA-256: cd3cae55fda4414f4db6242425fface00156996b5c2f86fb007e6ad541e3d830
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a link farm designed to redirect users to malicious infrastructure, disguised as IELTS exam preparation materials. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ielts+general+writing+task+2+samples+with+answers+pdf. This indicates a social engineering attack aiming to trick users into visiting a compromised or malicious site.

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=ielts+general+writing+task+2+samples+with+answers+pdf In PDF document text
    • http://files.rangersafc.co.nz/uploads/1/3/2/6/132681836/1fe2a7c1b.pdfIn PDF document text
    • http://bulute.srhdonline.org/uploads/1/3/1/4/131453698/1e407b.pdfIn PDF document text
    • http://files.newyorkstategrandcouncil.com/uploads/1/3/1/4/131437538/bapemo.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/1/0436/3301/6982/files/27809513717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/15598178794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/resif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/wing_chun_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/marriage_certificate_form_madhya_pradesh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/keto_food_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/16597465400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/70385494596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/william_foley_anthropological_linguistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1821/files/zorabaxomamezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7193/0529/files/similes_and_metaphors_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/indian_calendar_2016_with_holidays.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_off0000b33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB33E 5680 bytes
SHA-256: a28a6eb7eaba238fe3a5bdb4aced6019b72797b8e447172a5d380ee8fa9fde08
font_01_sfnt_off0000c680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC680 10500 bytes
SHA-256: 46aff532379038fa3978efddb469e3742e4f6b41f8b82dfa5e40fb1e13d55e15

Open this report in the interactive analyzer, or submit your own file for analysis.