Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c89959de89d996…

MALICIOUS

PDF

38.6 KB Created: 2020-08-18 12:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2b9b492632d9cb4dce15a2b2f6831f1 SHA-1: 395a061aeb8141fa0b9ceec6c7d64b9747ef772c SHA-256: 25c89959de89d99648a56db40ae29723a02a794bce323a94797db1b6fa03b99b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to 'dilations worksheet'. The primary attack vector is likely social engineering via a deceptive link within the PDF.

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=dilations+worksheet+draw+a+dilation In PDF document text
    • http://files.doodlenotes.org/uploads/1/3/1/3/131379594/e7148e744.pdfIn PDF document text
    • http://files.swwsupplies.com/uploads/1/3/2/6/132681749/839728.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/1/0434/5249/8070/files/dusemokixav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4022/3911/files/bank_job_application_letter_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/ejercicio_aerbico_y_anaerobio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7967/9646/files/485190721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/pubunuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/pugawaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/meruwuvonixejixibegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/english_hd_audio_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5505/4999/files/melaruvodukepivanugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/rokutananula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0979/8307/files/17996955470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/vejeposusifabenekojiful.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 3

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_off00005b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B23 5068 bytes
SHA-256: fc12169142dee75240e23bec744d06bc91d2aecc035631c74fd7ecbeea588484
font_01_sfnt_off00006c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C63 9712 bytes
SHA-256: 6a6088e3535772d9e510cd172489cedf416e96ea1155dfb3845f70cb9c2e4db6

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