Malicious PDF — malware analysis report

Static analysis result for SHA-256 7187a064d4197eda…

MALICIOUS

PDF

46.2 KB Created: 2020-09-01 22:39:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 216162428a01b32290805b5b2ae0cb2a SHA-1: 630ab127c1b081c9016722d59393fe0bc1b0f1ec SHA-256: 7187a064d4197eda8245807b69d36ece82e81c127637819db34dd220c9077fbe
202 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a redirector URL used for phishing lures. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick the user into downloading a payload. The document body, though heavily obfuscated, contains the redirector URL and references to other PDF files, suggesting a link farm or download lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/pify?keyword=crystal+reports+10.+5.+2.+0 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f8d12838077847a99950e74cb370d10e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c274e91da040459b9796b3f7d95bebb5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_20bf0c9171154a18bdc394bd83543d88.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b56239_0203e63e6f4e40ddb52ff54073e0c828.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2c1c2a3713ab43eab5e5e0d28b856f2c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9631e454f8c64eb89350741a13eb1129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/nekikubilatiwuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/49976160627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/zuseni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/arborists_certification_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9009713252.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F46 5304 bytes
SHA-256: a0eb9dc25ce37fa0734624fa53fb0660c7ef7623950652afd16e697bf3660f64
font_01_sfnt_off0000716d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716D 10840 bytes
SHA-256: 7965435d50c705fe562355cb4028fdc000f9db6821ea6aa15b15d337953fdc3e
font_02_sfnt_off00009690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9690 16344 bytes
SHA-256: ed45a24507f18daeaf6b6e9cac20235e9e43bed88bc2d44b7621eff085e31190

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