Malicious PDF — malware analysis report

Static analysis result for SHA-256 136c1b503070bf44…

MALICIOUS

PDF

44.0 KB Created: 2020-08-09 08:10:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fb06f1468048f9b86f4c2ce2530fc90 SHA-1: 9aad561d3e2a7b86c7e5c20e17cb7b367fdf9211 SHA-256: 136c1b503070bf4454bc75d9fb39a958c91bf1e74ba0baabc843ec214173f5b1
194 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior by acting as a link farm and redirector, directing users to potentially harmful content. The embedded URL, https://ttraff.ru/pify?keyword=bipolar+treatment+plan+pdf, is identified as a malicious redirector. The document body, though obfuscated, contains references to the redirector URL and other PDF links, suggesting an attempt to disguise malicious activity as legitimate content. The ML classifier strongly supports the malicious verdict.

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=bipolar+treatment+plan+pdf In PDF document text
    • http://files.araliaonline.com/uploads/1/3/1/8/131871614/xepafuvuvotuna.pdfIn PDF document text
    • http://potowixe.yosefrefaeli.com/uploads/1/3/0/8/130814328/batenex_poraziradukiweb_jivogakiveked_tumewirezodemil.pdfIn PDF document text
    • http://pevoromo.armonkdance.com/uploads/1/3/1/3/131381428/tisofoxag-gevabi-xaruluw.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/1/0438/8611/7019/files/47978644325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/careless_whisper_partitura_clarinete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/discord_staff_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1079/files/calendario_2020_con_festivos_espaa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/lazitexetegivakelomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9154/0634/files/73453468752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1894/4665/files/21453835288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/littering_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/faxupezulimasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/wepunip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/84883487174.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 2

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_off0000702e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702E 5056 bytes
SHA-256: 0afc6c57484cee7af167f8e2c80cb85a970417af8744d770fde33f781f7a07b4
font_01_sfnt_off0000814a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814A 9952 bytes
SHA-256: c9954339ed5e224784fc2af6b4a3196989d1beabfcaa4b05c5637d722fccb078

Open this report in the interactive analyzer, or submit your own file for analysis.