Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b6b6e6e9e1c97a…

MALICIOUS

PDF

45.9 KB Created: 2020-08-01 15:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fff43be809168f9314be16953320dac4 SHA-1: a161a43e499f5b3f562b3765f395b5bd0dfd89db SHA-256: 27b6b6e6e9e1c97a3dc8a32995312d435f29a3a4f250f193716dc5daf6acc918
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=scarlet+letter+study+guides'. The document body, though heavily obfuscated, contains text fragments suggesting it is disguised as study guides, aligning with a lure for phishing or malware distribution. The presence of a link farm heuristic further supports the malicious intent of distributing content via numerous external links.

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=scarlet+letter+study+guides In PDF document text
    • http://files.servecom.co.uk/uploads/1/3/0/8/130813095/nubanatos-xekodalixa-wisozefoxikubaz-datut.pdfIn PDF document text
    • http://files.ukirkaustin.org/uploads/1/3/2/8/132815365/784cfeb13e57a.pdfIn PDF document text
    • http://files.moombaparkps.vic.edu.au/uploads/1/3/1/3/131383514/4040691.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/1/0439/1842/6267/files/litemulipiterizesenujij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/18974990516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/najagewokubuwigav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/30587689945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/39495095820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2175/2731/files/javascript_array_to_json.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/8769604536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/suvokoladasosutemekuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5045/1623/files/lusexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8537/3333/files/zaruvogefugumeket.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_off00007611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7611 5312 bytes
SHA-256: fd3b44d192f966d650652bf435815435322b526e2224689e6b53585e88fd7b31
font_01_sfnt_off00008836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8836 10164 bytes
SHA-256: 25f7377469b8e0bc4ea545f59090d562453ba7f507a463538e12078f094b2dfc

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