Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0378f8a3b574518…

MALICIOUS

PDF

55.7 KB Created: 2020-08-03 08:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da9c9cf621bc821c1f4eecf94c6da700 SHA-1: e96b9626359455dc9b265e11560852016d95f76a SHA-256: b0378f8a3b57451805d7f208bfc748ee544baf335a39c73578144151003f6419
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector, ttraff.com, which is flagged as malicious. This redirector is part of a link farm designed to appear as legitimate book downloads, likely to trick users into visiting malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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.com/pify?keyword=fundamentals+of+applied+electromagnetics+6th+edition+pdf In PDF document text
    • http://files.whatsthegfc.com/uploads/1/3/0/8/130815009/porumu.pdfIn PDF document text
    • http://files.nlaofshreveport.com/uploads/1/3/1/0/131069824/vugenotubufawe.pdfIn PDF document text
    • http://files.inbusinessforlife.org/uploads/1/3/1/8/131856715/tobololakujisek_savogiki_zimenevuvawe.pdfIn PDF document text
    • http://files.stjohnsfoods.com/uploads/1/3/1/4/131412181/2e53ec0c5f.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/1/0429/9826/8065/files/81919285212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/miditojadanuwuzeluburo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/29304146121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/dubafogirebofojewuliputel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/tawasogamizalerilisofanuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0273/files/52347120395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/61616208023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/sasuxunojudowezogubebaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9575/files/doxikotosul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/amerika_rammstein_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7617/3472/files/vimilufikoferuveni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6553/0785/files/bryant_plus_90_furnace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/average_window_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/the_walking_dead_graphic_novel.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
🗂 Part of campaign: europeanburmesebc.org 4 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 9528 bytes
SHA-256: 87f54107e8b800c4ad19370bd954ab87a7c66bd7ed050ff3a7b214ed6d5b21f6
font_01_sfnt_off00008bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFE 5680 bytes
SHA-256: d05442eff6be4b4d32b624bab4987df21e8818e1e167d02adb821879f890a40c
font_02_sfnt_off00009f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F27 16096 bytes
SHA-256: be24a90e161e3b54ad1741f5b13cca45d5c58dc4e4f03a5891113e371b8bc752