Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18728ca52473d22…

MALICIOUS

PDF

45.8 KB Created: 2020-08-14 07:01:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 021e4e9d771d20e1455d5e629f2d80ae SHA-1: f9ab442e904a33f20f6dff4a2382b0f3d9f064f0 SHA-256: e18728ca52473d22d485261ac09cfab7bc1e692d1e6c22c5d3e7663d25728e0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body, though heavily corrupted, contains the same URL and references a PDF related to grammar exercises, suggesting a lure. The presence of numerous other PDF links, many hosted on cdn.shopify.com, indicates a link farm strategy to improve SEO and distribute 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.com/wb?keyword=haupts%C3%A4tze%20nebens%C3%A4tze%20%C3%BCbung%20pdf In PDF document text
    • http://files.showercamp.com/uploads/1/3/2/6/132681670/ximuvuvapufapi.pdfIn PDF document text
    • http://files.bonnielynnsart.com/uploads/1/3/1/4/131407635/51edc10698da5b.pdfIn PDF document text
    • http://files.dipconcaribbean.com/uploads/1/3/1/1/131164198/seloko-xolaxiba-zarujesizi.pdfIn PDF document text
    • http://files.jazzwealth.com/uploads/1/3/2/6/132682974/moxelo.pdfIn PDF document text
    • http://files.thornhillschool.org/uploads/1/3/0/9/130969150/7107fa3c.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/1/0429/1906/7815/files/97778860363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejodogidevetakuranuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/zuvazopoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/guitar_basic_chords_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/english_grammar_books_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9342/5316/files/vojono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/84567860857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80170273674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/tabuzanunajoruzananug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/95795153842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2769/2695/files/8936804566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6724/8535/files/vibrate_when_call_is_answered_note_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/xojepuruk.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_off00006ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA2 5588 bytes
SHA-256: 8b965ca81e33beeef83631646d2894af0d860e8c7202850d54743a3518f5f611
font_01_sfnt_off00007ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE7 13384 bytes
SHA-256: 9d2f4e279a16c6c4b4d5d8e92cb7fabd93d3b6ffbeb85cb3a6770bf4d979b543

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