Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59015f6a60d1bac…

MALICIOUS

PDF

149.9 KB Created: 2020-08-09 13:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a50c4655fc7422e441ae50a5609a578a SHA-1: 294ba71fd964632f967e51b4c4ee427df4abf793 SHA-256: f59015f6a60d1bac91bd205a7585436f2cada6ee72cc9a73e19d9d33b8bd4c29
134 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier strongly indicates maliciousness. The primary IOC is the malicious redirector URL, which is likely used to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=school+calendar+2020+17+deped+pdf In PDF document text
    • http://files.karleekilker.com/uploads/1/3/2/6/132695454/e9d61780e743f5.pdfIn PDF document text
    • http://files.spectrumequine.com/uploads/1/3/1/3/131380651/8739738.pdfIn PDF document text
    • http://files.hburghda.com/uploads/1/3/1/8/131857304/levaputupetowiwo.pdfIn PDF document text
    • http://files.freshenitup.org/uploads/1/3/1/4/131438423/loxes_fafupepob_pamedovis_wekuveraf.pdfIn PDF document text
    • http://files.boobsandgaming.com/uploads/1/3/1/3/131383294/mopubosirekep.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/1/0429/5681/6540/files/finezami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/loruduxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/24885878262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5144/files/dovokelobunev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3564/4319/files/adobe_photoshop_2020_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/kasado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/tazan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/8233217171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/vosidamewepirijaxim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/long_to_string_java.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_off000207ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x207AD 5576 bytes
SHA-256: 637d1288689c0453d41f9edc265dd82548b247d1b8e4e846763969cae218dbe5
font_01_sfnt_off00021ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21AB1 15240 bytes
SHA-256: 417e73c46a8604c892655176dab0b99155c2f6ad2a3ce63c43d4881933edc556

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