Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59c378421239777…

MALICIOUS

PDF

34.8 KB Created: 2020-08-19 03:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5598a79d53949ed9b65ff2a836ed9307 SHA-1: cfe8952e4001efe0dab4ef57822a8853190ca823 SHA-256: e59c378421239777183c8c3d62cd5b32e28cd2ca2d69bca8dd226140e432a0cf
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, indicating the document is designed to lead users to harmful sites. The presence of a 'download button' lure further supports a malicious intent. The document body text is largely garbled, but the presence of a URL within it reinforces the link-based attack vector.

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.ru/pify?keyword=gamit+ng+malaking+titik+worksheet+pdf In PDF document text
    • http://dalojemo.afdpc.org/uploads/1/3/1/4/131453215/jegixojaputovatera.pdfIn PDF document text
    • http://files.rsitoy.com/uploads/1/3/0/7/130738801/muvagiribi.pdfIn PDF document text
    • http://files.exsanguinationsignet.com/uploads/1/3/1/6/131606069/38e1874c713e7e0.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/1/0429/8145/8069/files/73561134410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/xifuvovajif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/87613681636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/kojimoluwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/bonalidejamozatimizufeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/sepsis_pathophysiology_and_clinical_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9050/8960/files/nesedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/42512936390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/53546443695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/92715667884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/how_to_change_password_on_macbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8761/8209/files/westlife_music_with_lyrics_app.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 8

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_off00004923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4923 5644 bytes
SHA-256: 9bde508d53063a80d6f136fada8f89589603c15e98e37d20b9c4a5fefaee6d72
font_01_sfnt_off00005c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C45 9996 bytes
SHA-256: f9f5c1dd90e4e3f3323e40fa52a72b2234de999d92c51864b7da4a5e399622a6

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