Malicious PDF — malware analysis report

Static analysis result for SHA-256 b93fa94e38ee5ec2…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 20:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8209d1818ddbd2654d1af88288ea9bfc SHA-1: 47562b7308334595cd1a2134c18e9404e9902105 SHA-256: b93fa94e38ee5ec294e89f55b21cefb21b54afbd663a5870a5714d8ed61b7443
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also functions as a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, with numerous links pointing to external PDFs. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=michigan+and+ohio+state+behavioral+theories+of+leadership+pdf', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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=michigan+and+ohio+state+behavioral+theories+of+leadership+pdf In PDF document text
    • http://files.gassafecertificatesplus.com/uploads/1/3/0/7/130775084/a380bc004960ca6.pdfIn PDF document text
    • http://volijok.amyhahne.com/uploads/1/3/1/6/131636655/gumet.pdfIn PDF document text
    • http://files.lofasothebosso.com/uploads/1/3/2/7/132740424/batikemeduka-zoxivatopugux.pdfIn PDF document text
    • http://files.sherieunfiltered.com/uploads/1/3/2/8/132815961/a59b4b501cc8.pdfIn PDF document text
    • http://zekinila.dudleysafes.com/uploads/1/3/1/3/131380005/25c8baad520.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/1/0439/2534/0328/files/zozumelepibozigeduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/xidiruvex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/kusaxasamotesigoguburiruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/31228883287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/waduduna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/vibebivejiwogajopogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6029/1742/files/fusionner_un_fichier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9824/2214/files/ancestor_worship_and_korean_society.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/wowiwupivogulivip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/83332938328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/87906048562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/1024117074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3138/files/losib.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000661a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 5624 bytes
SHA-256: 15db8a48222df901fd60c3900259c1c5e9d00fb82af3a9568e11c904097c3b99
font_01_sfnt_off00007939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7939 9664 bytes
SHA-256: 7d7de760eba7b1ffe9c489a46f6235acc327de38151543d741fee95e564f05c0