Malicious PDF — malware analysis report

Static analysis result for SHA-256 13bf118fb0a63646…

MALICIOUS

PDF

52.4 KB Created: 2020-08-03 17:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56fa8713bddbf6527c63d0fc48e3e42b SHA-1: 71bebe8938fea973e39ef9fbea02c4363e949756 SHA-256: 13bf118fb0a636462a45918888448531ab3d870cc29ce32bfc95025d5be26185
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that mirrors the redirector's target. This suggests a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=kant+and+the+problem+of+metaphysics+heidegger+pdf In PDF document text
    • http://files.hazardhealth.com/uploads/1/3/1/4/131437750/9008e.pdfIn PDF document text
    • http://files.intelligentwoundcare.com/uploads/1/3/1/3/131379085/vedivi_pegugikavu.pdfIn PDF document text
    • http://files.bdmchallenge.com/uploads/1/3/2/6/132681946/motezekujot.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/1/0429/6579/4965/files/doxuvebubexuniwotipavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/84108031378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/12920779146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/jupamudoligasate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1054/7099/files/xexabowuraxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6255/8874/files/22842400165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0134/files/rakelopetazizojumafiruk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4169/2567/files/20853040346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/5614/1212/files/muscle_relaxant_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/32213614487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/59380834643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/tadanogudobuzikezizewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9058/files/kamozapapako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/wimalixetitedoduzexeto.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 4

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_off00008cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFF 5780 bytes
SHA-256: a9c56095e60808db59cc91ee1abac9b73f92d32665647bcf63a41bb7de774aea
font_01_sfnt_off0000a091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA091 10568 bytes
SHA-256: 050c72a4710e62efefed699b8480cf8f0251c9d4ff0db7bf98e56fe8eecd085e

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