Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9917eb0ad1ba7dc…

MALICIOUS

PDF

44.9 KB Created: 2020-08-22 07:30:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 340e4aad389e17c6864fe54ca4cecadb SHA-1: dc2893233193d1b20af6aacf236b00cab0f290b2 SHA-256: d9917eb0ad1ba7dcd243b4351c74f3c9c83347dfc9fc41e7af4755a30dfd59d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a lab report. This indicates a social engineering attempt to trick the user into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious 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=determination+of+buffer+capacity+lab+report In PDF document text
    • http://files.lilysbathsandbiscuits.com/uploads/1/3/0/9/130969148/lajap.pdfIn PDF document text
    • http://files.sarnies.org/uploads/1/3/0/9/130970003/ef8a6.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/1/0440/1093/0341/files/lututunolorewozex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8708/5220/files/eye_of_azshara_entrance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/48165166879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/9951916829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/ligejovixeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/terrorismo_historia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/jadivazanezipamexapuneso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/fotolekakepirotip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/76287394851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5994/4353/files/date_sheet_ignou_meg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/chemistry_periodic_table_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8837/1107/files/6303450737.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7155 5224 bytes
SHA-256: 59890a50e693985c0a7d04c5c543f187bc0833fbf43d7ba3d4f0131c91771d38
font_01_sfnt_off0000830e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830E 10428 bytes
SHA-256: 154a47d351b3abb42504658e8e8ef6f44073f85dcf2df09e8ff3275aa4cfd842

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