Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b364e3ba11b395…

MALICIOUS

PDF

43.2 KB Created: 2020-08-04 11:08:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28e5d0145fae2c5bf5fc32d67606dba8 SHA-1: ea70a1338d57e5f11e37fad4d2ee0b1dc5cbcd41 SHA-256: 69b364e3ba11b39543ed998a98eadca200087c9179421bf1cf1d81552a09f7ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service known for malicious activity. The document body and embedded links suggest a lure for users to download files, likely leading to further malicious content or exploits. The ML classifier strongly indicated maliciousness.

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=reliability+of+safety+critical+systems+theory+and+applications+pdf In PDF document text
    • http://files.knowingourpast.com/uploads/1/3/1/4/131406676/485b8a.pdfIn PDF document text
    • http://files.nevewinter.com/uploads/1/3/0/7/130740221/ripemizirimeje_wokedisi.pdfIn PDF document text
    • http://files.toyouinspireflowers.com/uploads/1/3/0/7/130776521/5793582.pdfIn PDF document text
    • http://files.azfearvbc.com/uploads/1/3/1/8/131871518/lonakuzo.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/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/34414246644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4273/3221/files/33421694526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/wya_urban_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/tobetavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/62571978727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/gutazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/jidajereripedunilito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/3167603706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0512/3493/files/nipoditepib.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_off00006a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A57 5644 bytes
SHA-256: 120b9614d82cfc1a6afd54d7df463d7cf58d555a8ecd4839e1d3c542f710c6d7
font_01_sfnt_off00007d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6B 9828 bytes
SHA-256: e874fd1f2e190c04e75e7dc060528dc35e685c1b50a96a9bb72c9b0712b0d524

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