Malicious PDF — malware analysis report

Static analysis result for SHA-256 4da4ecdb6060637a…

MALICIOUS

PDF

52.5 KB Created: 2020-08-06 16:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b43dfe56f57ca29b68216ad485ca8c4 SHA-1: 6e17de822a18ae6a5f7ea1c79bc7253ceb45a7f9 SHA-256: 4da4ecdb6060637a42de61fa71cdf67bc20e4347967d19f118e72a23e79e3c04
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary link directing to a known malicious redirector at https://ttraff.cc/pify. The document body text, though heavily obfuscated, contains the same URL and a keyword suggesting a lure for a piano sheet music PDF. This indicates the document is designed to redirect users to malicious content.

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=bruno+mars+count+on+me+piano+pdf In PDF document text
    • http://files.harperschiccloset.com/uploads/1/3/0/7/130738621/tominigo.pdfIn PDF document text
    • http://files.thebescourthouse.com/uploads/1/3/0/7/130738531/17335a8f52593.pdfIn PDF document text
    • http://files.apiwv.org/uploads/1/3/2/6/132683017/f1aa9a.pdfIn PDF document text
    • http://files.johntoohey.net/uploads/1/3/0/8/130813510/ropopag_safumagumumuxax_vuzolaji_zopepelojoj.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/1/0429/9912/0033/files/92990169327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/lolulazuvapupebadije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/67402455094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83971047952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/dipom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/71204927875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/fapopopixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/fasure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/surah_rahman_alkalam._pk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/81792605891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7218/3710/files/bank_po_exam_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/innovage_jumbo_universal_remote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/netiravafixetepisanaruv.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C67 4540 bytes
SHA-256: e2112545a9246efacc9fe272c5eb1ba81b71882d5b8207a61805fcf7c1e413e7
font_01_sfnt_off00008c24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C24 5320 bytes
SHA-256: 6700ae4073c6aafc88ad7860ad6f4849c0f556e94b069316dc3b016449744bdf
font_02_sfnt_off00009e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E22 11512 bytes
SHA-256: 0c839e55edbe164e92c18e0fae21cd59088867dad1751382b9502f4432c4ae7e

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