Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5487edbda9f65c…

MALICIOUS

PDF

55.6 KB Created: 2020-08-08 12:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1b27ef4f4b320ee37a1b63222fd5d17 SHA-1: b7ac84748b3ef48d47ba9cfdbebb96cbe4634db5 SHA-256: 1b5487edbda9f65cb92700035fa2abe67a511c4abc6a5258f1e08637838a107f
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to drive traffic to a redirector. The primary redirector URL, https://ttraff.ru/pify?keyword=microscopio+optico+y+sus+partes+pdf, is flagged as malicious. This suggests a phishing or scam campaign leveraging SEO tactics to distribute malicious content.

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=microscopio+optico+y+sus+partes+pdf In PDF document text
    • http://files.healmylifemobile.com/uploads/1/3/2/6/132681342/9397033.pdfIn PDF document text
    • http://files.caitlinpadilla.com/uploads/1/3/1/4/131453784/nubodubi_bizujut.pdfIn PDF document text
    • http://jamija.kc-ink.com/uploads/1/3/1/3/131398008/parelovuvob.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/1/0430/7727/1703/files/34893763875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/dowemajevaxufamewarajexat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/5742961761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/68687581511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/aristotle_poetics_chapter_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3782/files/bakekekopofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/bumulif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9476/9821/files/12690771390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/join_and_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/mefafoxejepexuxarax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/70335548562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/angel_broking_closing_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/13095472520.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 5224 bytes
SHA-256: a3490b01cce85e9b9db1b225694b068f4efcc8de6a101308b919e57e7e72a4e3
font_01_sfnt_off00009016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9016 13732 bytes
SHA-256: f614c0df9fa190e20fad187c242ccd65fb4ea2d7ce1cb362926794ee7ec7c9f2
font_02_sfnt_off0000ba6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA6F 16112 bytes
SHA-256: 04c641d0aedeaa8c494855f42a2e9ae6fad9e3679126e7dc5c08fccc4b41c292