Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c2392225ac2a05…

MALICIOUS

PDF

38.1 KB Created: 2020-08-21 23:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb46056456ff3445dc32bffcf2c6c505 SHA-1: a5bf563cea4b4378262313ca93974f65153b0710 SHA-256: 18c2392225ac2a052a9d9bdaefb421baa37d25ed8be60f15f07f09ae2b5ed93f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded links that lead to a redirector service, identified by the URL 'https://ttraff.com/pify?keyword=direct+speech+to+reported+speech+rules'. This redirector is likely used to obscure the final malicious destination. The document's content, presented as 'Direct speech to reported speech rules', is a lure to encourage users to click these links. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm or phishing campaign.

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=direct+speech+to+reported+speech+rules In PDF document text
    • http://files.lipsbylil.com/uploads/1/3/0/7/130739239/f9fd32ef.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/1/0429/6183/0037/files/26992635767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/90227251197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8078/5821/files/32117868337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/77957780032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/bulagalufopanobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/52293730002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/wixas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/64179598935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/xapemaxisotakep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3581/4046/files/read_between_the_lines_answers_religion.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_off00005903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5903 4948 bytes
SHA-256: 3f45b1073fc58f377b2d8e0ef9bede49501a4ae5b5444d220456e26070a18129
font_01_sfnt_off000069d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D0 9916 bytes
SHA-256: 6bb901f60f633fb9fb928729fa66d841875fd04fe63851758e4ff451a7f42bb4

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