Malicious PDF — malware analysis report

Static analysis result for SHA-256 d291d973ea2ee540…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 01:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e78cfdd86b0d411356f68cd555be05c SHA-1: 2432345af6968120128317f246ad3f5f68903fea SHA-256: d291d973ea2ee54064c3b7362fe006ea0c646288ac73c2016019cd4607a8c6bd
194 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, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates malicious intent to distribute links. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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=non+aqueous+titration+theory+pdf In PDF document text
    • http://loboka.handsonhexham.co.uk/uploads/1/3/1/3/131383483/9642171.pdfIn PDF document text
    • http://files.onceuponabookauthorsigning.com/uploads/1/3/2/6/132680915/ravurimox_wavuwubox.pdfIn PDF document text
    • http://files.maryvillekiwanis.org/uploads/1/3/2/3/132303339/9744444.pdfIn PDF document text
    • http://jixiged.fryfamilyfoundation.com/uploads/1/3/1/6/131606758/noxuvom.pdfIn PDF document text
    • http://files.bravodancefamily.com/uploads/1/3/1/4/131453252/kerofibi.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/1/0430/8133/4933/files/fulureto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4452/8550/files/setup_your_own_disposable_email_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/sobivoxinuvozobuboji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/muzabujefak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/fezewujuduxurexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/tutorial_aegisub_lengkap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/35806549763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/bible_history_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/xijevetono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/41817312905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/63173770250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/65591635405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/convert_to_mobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/77047279300.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_off00006887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 5292 bytes
SHA-256: 7229bade9bac55e0a5c6ca004d84ff4b379f7c98272b75df854a213271eb64fc
font_01_sfnt_off00007a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8D 9912 bytes
SHA-256: 177fab4fefa4fbe5fdc1362c10862621148b002c6ced36c360cb7a5eb1e3b0d7
font_02_sfnt_off00009c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C74 16100 bytes
SHA-256: 01e49661dbdd7b4823267156d85e4b6ddc25a6de2ac0af4d78c137cfa2b371b1