Malicious PDF — malware analysis report

Static analysis result for SHA-256 53eefb1d3141d063…

MALICIOUS

PDF

44.2 KB Created: 2020-07-27 22:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83129d7fea24df21a74aa2dd12fbd4a7 SHA-1: 08dd16be20816aafe214fac3f315af2f7599088a SHA-256: 53eefb1d3141d0633532efa7e0fa5dbc28f192557f64b905162fe472cee27b4c
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1566 Phishing

The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. This link, 'https://ttraff.cc/pify?keyword=1-+99+construction+guide+rs3+2018', likely serves as the initial lure to redirect the user to a malicious destination. The presence of numerous other PDF links, many pointing to potentially untrusted file hosting services, further supports the attack pattern of distributing malicious content or conducting phishing. No specific malware family could be identified.

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=1-+99+construction+guide+rs3+2018 In PDF document text
    • http://files.roamingbuffalo.us/uploads/1/3/2/6/132682930/9255871.pdfIn PDF document text
    • http://files.critical-juncture.net/uploads/1/3/1/3/131383649/bobasakijapox.pdfIn PDF document text
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdfIn PDF document text
    • http://files.soignecalligraphy.com/uploads/1/3/0/7/130775373/502c834205e6.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/1/0428/9835/8432/files/43778875991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3759/7607/files/10461603422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7742/5565/files/torisezojad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/3716935610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/66838539677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/fekewafekezurib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/35206639428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/38937414609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4595/2408/files/zobesikapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/67832913242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/33510144455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/rukiviga.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_off00006f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1C 5524 bytes
SHA-256: f5af14d19640f59fea41480f31f364574c3c027393c8bca255f085c4d7413359
font_01_sfnt_off000081e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E2 9876 bytes
SHA-256: 88d986a1702339da658fb3ebd54c033f3de89827991c39dfb7da4be4593aea60