Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7fc16f3e2bd8fd…

MALICIOUS

PDF

51.8 KB Created: 2020-08-06 13:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e82f5f40fc5c6981f516fbaebf20b50 SHA-1: e0be21f6879b8ebe6b82e4b2f2c701bc83d8882d SHA-256: dc7fc16f3e2bd8fdb36c29372d4a6f8fc23f1e741d38ad5efb6ee43d2ff83d73
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=algorithme+matrice+exercice+corrig%25C3%25A9+pdf', which is likely used to lure victims into downloading further malicious content or engaging in phishing. No scripts were extracted, but the document body contains obfuscated text and URLs, reinforcing the malicious redirection intent.

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=algorithme+matrice+exercice+corrig%25C3%25A9+pdf In PDF document text
    • http://gonavev.reannhuber.com/uploads/1/3/1/6/131606069/28f77056.pdfIn PDF document text
    • http://files.balletclassique.net/uploads/1/3/1/6/131608016/01cb921f4.pdfIn PDF document text
    • http://files.britishrecordshoparchive.org/uploads/1/3/1/4/131482884/xejaludalawi.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/1/0434/5928/1061/files/calendar_printable_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3967/7861/files/orbit_6_station_timer_manual_57161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/xexedorawapalumopadavogog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9237/5704/files/41918439897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6009/2315/files/gold_pickaxe_stardew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/wosasaxorimerimipulawada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/11086494754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/91845705411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/4687197108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4760/7720/files/lodatenamalorejekob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/boricua_definicion.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000706e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706E 5272 bytes
SHA-256: 51ada7e575293a7fd6d649a285c1764f76ea46404d15907d185eeb62f2ccffb6
font_01_sfnt_off0000821a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 15992 bytes
SHA-256: 96d1a2c8b8cdb0eb207847b8d9c862d46e39d241336c3c0c5c0088d878df6aee
font_02_sfnt_off0000b1c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378