Malicious PDF — malware analysis report

Static analysis result for SHA-256 e818ab377e1da22c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-13 12:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fed21c566aba78a2cc6f1c1cbe2dc1f5 SHA-1: f57a19269cdf4f2029caeb8ad4e160a920a3badf SHA-256: e818ab377e1da22c4adea6e5be031ef4326e8ea1fa36ad7e9935fdecfdce8ef4
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be part of a link farm. The document body, though heavily obfuscated, contains text related to sewing machine manuals and the malicious URL. The primary malicious URL is `https://ttraff.ru/wb?keyword=kansai%20special%20sewing%20machine%20manuals`, which is likely used to lure victims into clicking through to a malicious site.

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/wb?keyword=kansai%20special%20sewing%20machine%20manuals In PDF document text
    • http://files.lifeisgoodwilliamsburg.com/uploads/1/3/1/0/131070378/cabefefab7216d.pdfIn PDF document text
    • http://files.jpkindinger.com/uploads/1/3/1/3/131380745/1044996.pdfIn PDF document text
    • http://files.naturalhealthperth.com/uploads/1/3/0/8/130815026/sibimimimodutaxom.pdfIn PDF document text
    • http://files.apowersphotography.com/uploads/1/3/1/1/131164479/13b06.pdfIn PDF document text
    • http://files.nfpplanning.com/uploads/1/3/1/4/131406799/2505347.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/1/0435/7311/7087/files/31553403413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/13612626775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/2371737489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6720/9883/files/amebiasis_cutanea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2418/5506/files/n1_mathematics_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5775/6825/files/soduniwumozoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/20521212990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4784/5030/files/1st_2nd_conditional_exercise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/megebulajikafifusumedipen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9032/7205/files/tavaxesebedipov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/77869433798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/doxokotosoziwebitubetetij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7170/8065/files/82049476007.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_off00005d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D31 5312 bytes
SHA-256: e3a5e9570d5b8500ca40657b934b757d9775af2d04b6012d5eae47507333daee
font_01_sfnt_off00006f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F34 11976 bytes
SHA-256: c59f0f9526eec5c8029faeac239bb718742bf3ba25d8b3d074d5f9b6b90e5ba4

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