Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ba6fedacff87b0…

MALICIOUS

PDF

53.1 KB Created: 2020-07-31 19:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02f11c8d4266ddcddbf115facf4b29b5 SHA-1: 3f7950648ba59648a9b4df353f1d9a24d48fddd2 SHA-256: 42ba6fedacff87b07019249757a4e09ef65c413b46df665ea90cf57f8aac5500
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. One of the primary URLs points to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. The document body contains garbled text but does include the URL 'https://ttraff.cc/pify?keyword=most+popular+discord+servers', reinforcing the heuristic findings.

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=most+popular+discord+servers In PDF document text
    • http://files.nikkiheyder.com/uploads/1/3/2/6/132681343/zegun_reromi_donotije.pdfIn PDF document text
    • http://files.nydrivinglessons.com/uploads/1/3/1/8/131871705/9870994.pdfIn PDF document text
    • http://files.measurev-mcag.com/uploads/1/3/1/4/131408103/gesavo.pdfIn PDF document text
    • http://files.bangaleebushcare.org/uploads/1/3/1/6/131606118/nulamaferu_xujoravopefejol_bonututax_sidegelajefani.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/1/0433/3997/2773/files/7446534033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/goduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/talifutijomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/mejomiwolakolitepagawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1325/7885/files/rezuxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/70562272652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/foxit_mobilepdf_reader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/47053201552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/62396041106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/82101060001.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_off00007a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4F 5132 bytes
SHA-256: ce136e949d499121b1676ef8ec324189dd5e2e2efc0a35c1852d75b2014b487e
font_01_sfnt_off00008be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE6 10980 bytes
SHA-256: 431fa1433e7e0ed458cd8d5ca0a4ce94e14412e8522f920950c8d28e8da9d2a3
font_02_sfnt_off0000b150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB150 16320 bytes
SHA-256: 04b30c2f2a8018c7583bcbc57b73eccbfb80cfa1e5a2d096ee4f0652c1212bf0