Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bdfdb5f19dcaa8…

MALICIOUS

PDF

51.5 KB Created: 2020-08-02 12:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1ff15f707937da3dd5f4b4005f6c302 SHA-1: 37557b1283d6aeb75db15857fd0b42144c496953 SHA-256: 62bdfdb5f19dcaa8a0c9b4e5007a87daf96854671e8524b2e30e674aab0b47d2
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 a link farm. One prominent link, 'https://ttraff.ru/pify?keyword=how+to+write+a+readme+file', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct users to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

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=how+to+write+a+readme+file In PDF document text
    • http://files.safeagsafeschools.org/uploads/1/3/0/7/130776590/7206572.pdfIn PDF document text
    • http://files.tahlequahtrails.org/uploads/1/3/0/8/130874086/1607821.pdfIn PDF document text
    • http://files.mgeducation.net/uploads/1/3/2/6/132682627/525561.pdfIn PDF document text
    • http://files.albcountry.co.uk/uploads/1/3/1/3/131397946/porijubemerupom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/67295736581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0514/7298/files/black_and_decker_grass_trimmer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0310/0832/files/types_of_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/53463881901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/malerofefamizekigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/bopesomizexanaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1103/7591/files/xitesudovisugijotenorowus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/55085743816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3673/7699/files/12462441060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38692385895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/40110336848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/tuwuxufusanumixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/wugogaforefa.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 4612 bytes
SHA-256: 70d2350603c7c3b2cd08e1119ce9aa1a5fcbfea0c85e912fd00812985dae3bfd
font_01_sfnt_off00008dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCE 10848 bytes
SHA-256: 329baad05ab98a4b8763b4223e3ab85ae7fec091a1ddd09a18cee3239749f3fd
font_02_sfnt_off0000b2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333