Malicious PDF — malware analysis report

Static analysis result for SHA-256 960e6b71a487a5f5…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 11:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef1503261a9a31a01f3dc1e28ecf2e80 SHA-1: 8e28a1dcbec1f40cede22449a5a7b1291bf480a2 SHA-256: 960e6b71a487a5f541a92b72e4c92f16e73dc71fd2c8d6f663b8889592cd2d4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the presence of a PDF link farm. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The ML classifier strongly indicated maliciousness. The primary attack pattern involves redirecting users to malicious infrastructure via a disguised link.

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.cc/pify?keyword=gestational+diabetes+mellitus+acog+pdf In PDF document text
    • http://bokifema.caribbeanshadeproducts.com/uploads/1/3/1/4/131453177/gadetubirafevofejowe.pdfIn PDF document text
    • http://files.bernardcreative.net/uploads/1/3/0/7/130775435/xaditoziwe.pdfIn PDF document text
    • http://files.idleforde.net/uploads/1/3/0/8/130813846/wexejile.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/1/0431/0158/5570/files/66454139584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/small_scale_enterprises_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/tinazemetujefabupagenatis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/jisudur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5838/0446/files/english_japanese_visual_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/99013949857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0273/1430/files/mogovazalidedakovibud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3511/2103/files/namakam_chamakam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/42346944801.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 1

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_off000074d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D8 5552 bytes
SHA-256: 6dfc2d18ef5ac89cf8cb8b3fbe1d6aa6c3a778ba0f050dcfb8baf0dea2ec233a
font_01_sfnt_off000087ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AE 10428 bytes
SHA-256: c6c5ba3860bf4af407dffcd6733ad2e4f71922c4c3d64fbef6b0302429283b4a

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