Malicious PDF — malware analysis report

Static analysis result for SHA-256 537e817c37271b35…

MALICIOUS

PDF

38.7 KB Created: 2020-08-12 12:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d27d2164cd01c12448f277be2a377d38 SHA-1: 60dadbf162d32b0a9d37d5c1530c7d45ce5be9b5 SHA-256: 537e817c37271b3574f36c76ea028d4ddbcc695c2a00279ee4bf1df1e92f0f11
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to redirector infrastructure like 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=amsterdam+sightseeing+map+pdf', suggesting a lure to disguise malicious activity as a legitimate download. The ML classifier and critical heuristics strongly indicate malicious intent.

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.com/pify?keyword=amsterdam+sightseeing+map+pdf In PDF document text
    • http://difeta.shorelineartists.net/uploads/1/3/2/7/132710797/kukomuwewakavegiva.pdfIn PDF document text
    • http://files.rockinrobindjs.com/uploads/1/3/2/6/132681992/magojujukakowe.pdfIn PDF document text
    • http://jomitam.amariejphotography.com/uploads/1/3/0/7/130775085/7ef991b823458fc.pdfIn PDF document text
    • http://salulo.glitchedworks.com/uploads/1/3/2/8/132814930/6236858.pdfIn PDF document text
    • http://files.jam5k.org/uploads/1/3/0/7/130739892/wixidunaleda_gutoxoroj_lozumad_fagizejiz.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/1/0433/0687/7080/files/63016720996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6013/3030/files/33282_blanche_lake_elsinore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/bombastic_words_with_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2718/5311/files/54152227953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/cavatina_partitura_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/70977859051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6363/6131/files/osho_the_book_of_secrets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6901/4177/files/fajixumuravik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5251/4979/files/jagiliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/67763971716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/botewijepazisomodofejonaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/i2_analyst_notebook_9_user_guide.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 2

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_off00005a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1B 5412 bytes
SHA-256: 1621915f1f9a4e547322015ffb0f40f0c3f212aa0907eccba24c5fbe6f98736a
font_01_sfnt_off00006c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 9844 bytes
SHA-256: 96e659a665e073d345b1782514fddce03a1a891b0dcaaa43754611a5633fb345

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