Malicious PDF — malware analysis report

Static analysis result for SHA-256 77900ecedb82e268…

MALICIOUS

PDF

53.4 KB Created: 2020-08-26 08:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36772d3c84818a85a58b4679a5eb4245 SHA-1: 52eec4a734791e20625883e89a6606f9344991a5 SHA-256: 77900ecedb82e26852af460e91d97d98eeb542209f6f4818b82bbf4af17a3e39
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass of external links, many of which point to a redirector service known for malicious activity. The document body itself contains a deceptive search query, "What channel is starz on verizon", which is likely intended to trick users into clicking the embedded malicious link. The ML classifier strongly indicates maliciousness, and the presence of numerous SEO-optimized PDF links suggests a link farm or phishing campaign.

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=what+channel+is+starz+on+verizon In PDF document text
    • http://files.tennesseeheartwood.org/uploads/1/3/0/7/130739004/2c273605e8ae1.pdfIn PDF document text
    • http://sonuv.bellacsanders.com/uploads/1/3/1/3/131380550/1893753.pdfIn PDF document text
    • http://zogowi.scentsmithperfumery.com/uploads/1/3/0/7/130738847/74538c7e8.pdfIn PDF document text
    • http://vewulopa.cypressofantioch.com/uploads/1/3/0/7/130775672/vozezu-todepazika-gapaguwiduj.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/1/0429/0448/6055/files/tunalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/xufugupuzivavukalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/0522/2555/files/64440336328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/tufomonet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/adobe_cs5._5_master_collection_serials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/32431484051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/numoben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/waxapujepomovabot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/60495438555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/50515999103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9937/3214/files/30606842233.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 5012 bytes
SHA-256: 19ea6ef9caea6d5a336de9625c634834541f9b34e0de10094a6cdc7e26b38f77
font_01_sfnt_off00007ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDC 16128 bytes
SHA-256: c6fd93b29c26afd0fd7ec3a679026dcfa883d7ad36f2180ab1fc85bd95091f4e
font_02_sfnt_off0000b028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB028 16348 bytes
SHA-256: 44344d777475bc27302cf71c6ce9e96b5edcb3cf6b8673c7cacff1863add0d01