Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c1c71dbca161d9…

MALICIOUS

PDF

38.3 KB Created: 2020-08-06 23:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 449d8cb70ee31613c1b23de2b75508f2 SHA-1: a057cc0a40feb5d809a68f3c1040b1f93f7970d3 SHA-256: 68c1c71dbca161d90a7423674561f8df9070d165f6078bcfbc1d6166091e0ab1
202 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as download options for legitimate software, such as 'Adobe pdf reader free download for windows xp 32 bit'. The primary redirector URL, https://ttraff.cc/pify?keyword=adobe+pdf+reader+free+download+for+windows+xp+32+bit, is flagged as malicious. The document also hosts a large number of PDF files on Shopify domains, likely as part of an SEO link farm to improve search engine ranking for malicious download lures. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=adobe+pdf+reader+free+download+for+windows+xp+32+bit In PDF document text
    • http://files.gordoncobbphd.com/uploads/1/3/0/9/130969242/7040740.pdfIn PDF document text
    • http://files.outhustleathletics.com/uploads/1/3/1/6/131637150/tixilep.pdfIn PDF document text
    • http://files.fcccambridge.org/uploads/1/3/1/4/131438086/tufax.pdfIn PDF document text
    • http://files.michellestartzmanmetalwork.com/uploads/1/3/0/9/130969306/diwodi.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/1/0435/5165/4047/files/35877809506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/84730902260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/5573106569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5203/0357/files/31444851472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/15361347345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/lakotojajajarikopoxake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/bedenibepupimavaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/vetut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9942/files/torawiwubibiboramat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2599/5688/files/sublime_text_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/rokomanelizinifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/giduxizeretewezedogesa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D1 5620 bytes
SHA-256: 24d36697d43affb96b3cf65a79ef9a4622c5c44ab50bc119e6544e6bb3be9a46
font_01_sfnt_off00006a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A16 10136 bytes
SHA-256: 4223c597364adfd47d015b8499e059cfaf42be7dc7b338832f3d56418733bef6