Malicious PDF — malware analysis report

Static analysis result for SHA-256 649a1ffe30fbc20f…

MALICIOUS

PDF

308.5 KB Created: 2020-09-02 02:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28dcab7ae3cc1a4a9b162be80958a6f9 SHA-1: d22c86bab29975f75e1177a232e15f1d7bc9206d SHA-256: 649a1ffe30fbc20f07932e94ca07a82eb8bf7b6ada2811acda1cca3db549cd27
134 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it links to malicious redirector infrastructure, specifically a URL designed to phish users under the guise of providing guidelines. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/wix?keyword=esc+easd+guidelines+diabetes+2013 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/1a89c8_0d6baf4bc85e4a94924b7de498f682da.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f1780b_1d1f09d1251d49e1bc621167c25a2e7c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ce5d00_05b7d9715a024643b3a6b12d751f48fa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b0b521_b376bea564d2439caf4d556e6073bf84.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5956/8037/files/social_media_marketing_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/60838162326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/pabomivunulafazibaxuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/fakinodemuzirox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/baby_bus_games_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/2634169440.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ce14f3_3939c69d2b7e431c8e25f3f2a21459aa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/08fe48_d5d54e4092dd44b186eb351f08283bab.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cb927_168223d781404b9f8bfbe55dc784d7df.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/64e449_61eec579a13f4b0f88535de4339bc9f5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f65175_07f26154aae049e5aeb59b467dd6f604.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00045b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45B3C 5368 bytes
SHA-256: 2da0dc5437ea526e11c21682ec6d51164907046d19ad65506f3a2fc6644bb133
font_01_sfnt_off00046d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46D84 15744 bytes
SHA-256: 3205229349e4c35c319d48d7d4f8d6c97e3baeb0addb29e10860c1065f90daec
font_02_sfnt_off00049e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49E85 16148 bytes
SHA-256: 98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a
font_03_sfnt_off0004b37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B37B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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