Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e23b9ba20786c3e…

MALICIOUS

PDF

79.3 KB Created: 2020-07-30 12:40:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91e0c3a3e83920781e949dcb977ff0c4 SHA-1: 262751246d13695284738d3e2f10d9e1f2ce238c SHA-256: 1e23b9ba20786c3ede0ba4cb65071bb464ecb4a2ade4ccba355b22f9ef8a8a39
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, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.ru). The document body, though heavily obfuscated, appears to be related to search engine optimization for PDF content, suggesting a tactic to drive traffic to malicious sites. The primary attack pattern involves luring users through deceptive content and redirecting them to malicious infrastructure.

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=anemia+en+el+embarazo+peru+pdf In PDF document text
    • http://files.laurirakoff-chertok.com/uploads/1/3/0/7/130740563/9701825.pdfIn PDF document text
    • http://files.damselholiday.com/uploads/1/3/1/3/131378932/a9e33e674a3.pdfIn PDF document text
    • http://files.blaqbear.ca/uploads/1/3/0/8/130874307/9566387.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/1/0430/4306/1909/files/mapoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2960/1175/files/botojeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/xegaxabugijegubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/69317462463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/vufitesex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/2007826840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/34086783142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/81377547980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/bipadixud.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 5

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_off0000ee00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE00 4988 bytes
SHA-256: 8125eafc65fba684314340145dad1218875824ca04fdf6ce9126f38e0ff4e1c5
font_01_sfnt_off0000fecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECB 15792 bytes
SHA-256: cf7a342acc3b02840748fbb29e404fba4ff9e9082bde672e04a213f7eda401e7

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