Malicious PDF — malware analysis report

Static analysis result for SHA-256 736ef9bb02af8147…

MALICIOUS

PDF

36.2 KB Created: 2020-08-22 18:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01091a5cf3f95733559fb2f48c1c1193 SHA-1: 04f7052b56fa5ae3d61c88bd19e2a2aef899a7e0 SHA-256: 736ef9bb02af8147c99647cb441648e10b67fe99d9bbfb4dd11de2ce2806b8db
134 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text suggesting it is a form, which, combined with the malicious link, indicates a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=va+10+point+preference+form In PDF document text
    • http://xifebi.mindspringhempco.com/uploads/1/3/1/0/131070858/b69b0a202.pdfIn PDF document text
    • http://files.vladimirblagoev.com/uploads/1/3/1/8/131856195/2574461.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/1/0434/1871/4264/files/o_mio_babbino_caro_scribd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4433/7824/files/shandaar_1990_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7833/7187/files/9481080169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3762/0381/files/absceso_apical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1282/2952/files/39688603417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/aprender_a_leer_el_tarot_de_marsella.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/10_commandments_explained.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 7

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_off00005181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5181 5112 bytes
SHA-256: bf4d039961c7305b3abdf3b70df22a5a8096417045eb79e6d71c6ffb9313f128
font_01_sfnt_off000062d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 9848 bytes
SHA-256: 910ad223b778c3e290415f57eb9d54ba7694a8a8dacb6af23ff23cfd1d040067

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