Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5d367e709355c7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-01 17:27:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3effd3b57a37af356f687ec80c321ff3 SHA-1: 4b1233d4b77fa91c935e423ac62e88f06fbb714e SHA-256: 1a5d367e709355c72a24434b3e7258f4f8ff1c769af3da8e1832cf67238b5a21
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=rain+dial+manual' which is flagged as malicious. The presence of numerous links, many pointing to Shopify domains hosting PDF files, suggests a link farm or redirection strategy to distribute malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=rain+dial+manual In PDF document text
    • http://files.hungerandthirsttheatre.com/uploads/1/3/2/7/132740458/wajikopubo_devukavoro.pdfIn PDF document text
    • http://files.cashforgoldwc.com/uploads/1/3/1/4/131438046/jokejuvonokikat-vobatejomol-jexiwurosenereb.pdfIn PDF document text
    • http://files.liverwellnessprogram.com/uploads/1/3/0/7/130740199/6090544.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/1/0434/3070/7356/files/67474715509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/bepokivemasikonumuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9721/8458/files/21028007023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/66390304963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/zagiduse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2564/5224/files/93421080577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/jigokivix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/97832133218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/88560433160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/76514314038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/82990727564.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 6

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_off00006275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6275 4704 bytes
SHA-256: caf895798e3fc9047b1ffabfd3305de8ba5d7a1f6fd1e209a97b28e333d88bd5
font_01_sfnt_off00007267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7267 10528 bytes
SHA-256: bd893dfc34f6f318534ba9734cf90bb59fc4c6eee2072c401f7960a3876f4dff

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