Malicious PDF — malware analysis report

Static analysis result for SHA-256 f78f11d7e173b973…

MALICIOUS

PDF

89.2 KB Created: 2020-09-13 07:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c718bb29e8a2b37eb17d436be980102 SHA-1: fb58719d291e4231acf4dde694e39d56e7401a22 SHA-256: f78f11d7e173b973054442f56058c726e894770ec087a67314e3ab82e2edc7ac
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the presence of a PDF link farm. The document body, though heavily obfuscated, contains text that suggests an urgency lure, such as 'account will be terminated'. The primary malicious URL, https://ttraff.link/wix?keyword=imperva+securesphere+admin+guide+pdf, is likely used to redirect the user to a phishing or malware distribution site.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/wix?keyword=imperva+securesphere+admin+guide+pdf In PDF document text
    • http://pilon.petfirstwalkersnsitters.com/uploads/1/3/1/4/131438873/jelukugojijuxa.pdfIn PDF document text
    • http://xoxoso.bbluntsheabutter.shop/uploads/1/3/1/1/131163991/5b1bce49eefac0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/julutofobopez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/berossus_and_genesis_manetho_and_exodus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5891/3431/files/naselulawelofafagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5571/7279/files/animals_name_and_pictures.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/48bf55_e243a844d02240a4b3a4d5eaf6215283.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/451461_c87403ea2d594c09ab0326d12b1c24fc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7f27948d92674af8a24dc4212ef7c3e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ca300b_13e63162269d4e82a23e571b1cf03698.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a2de88_933b941ff3c545cd9dcb9728959442f7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2c76f4_356ba53e9d57481cb0d5388018b0cce5.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA55 2828 bytes
SHA-256: 85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f
font_01_sfnt_off0001044f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044F 5228 bytes
SHA-256: 0a52405eb756a59b0dd6ddca03cae88edb6b97560edb71085cab9be003084c8d
font_02_sfnt_off000115e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E7 16120 bytes
SHA-256: 88cb004eaecdf8e2dd3f29be274678e8e517341f012a192469f62b4d2e1d925a
font_03_sfnt_off00014753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14753 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176