Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e58ce473eecc816…

MALICIOUS

PDF

64.2 KB Created: 2020-08-19 23:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fccddbccf365bef2c864f2e214563226 SHA-1: 46ef3c6ff9c8ff6a040653114c1a635b98700e7c SHA-256: 1e58ce473eecc816ace8ec13507e91b13dd30f7032451d6ceba810f388a59b71
202 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure for downloading an academic resource, which is a common social engineering tactic. The PDF_SEO_LINK_FARM heuristic further indicates a large number of links, likely for SEO poisoning or to obscure the malicious redirector.

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.com/pify?keyword=abnormal+psychology+17th+edition+free In PDF document text
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdfIn PDF document text
    • http://xaxamog.lifeandentertainment.com/uploads/1/3/0/8/130814717/9804276.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/1/0429/8165/4691/files/79497774469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/libro_aura_para_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/7936267367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/lasetimuxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/sezuxoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/insurance_broker_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7067/files/the_adventures_of_sherlock_holmes_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/24507240230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/48861550882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/apparatus_used_in_chemistry_lab.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_off00009a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A6E 5932 bytes
SHA-256: d3c72726bf8ca49c3affe92afe9d4595a6dc3f6919c6bc94f703bfcce851c8f7
font_01_sfnt_off0000ae73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE73 15440 bytes
SHA-256: 692afa27a58ff01b1f661f0d2224666725e43edf9b62fe1e7d180a4410bb6a66
font_02_sfnt_off0000de8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8E 16100 bytes
SHA-256: f12bcc42cb143e9cc41a08ef9f9c81c8a36c017982c073a20263204097028d61

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