Malicious PDF — malware analysis report

Static analysis result for SHA-256 276eb83fec24cc4d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 06:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a22048904ac913a1fed26d17dd7e84e3 SHA-1: f2d87a49bd2e4171f8d34325cf072d9f59bb3e3b SHA-256: 276eb83fec24cc4d228cb87551640b6da7f9b59a3ebc6ec5d804479a1ea04534
234 Risk Score

Malware Insights

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

The PDF contains a mass external link farm and a specific link to a redirector, indicating a social engineering lure. The heuristic 'SE_BROWSER_INSTALL_LURE' confirms the document's intent to trick users into installing something. The primary malicious URL is https://ttraff.com/pify?keyword=twitter+video+firefox+extension, which likely leads to further malicious content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=twitter+video+firefox+extension In PDF document text
    • http://files.shoreexcursionspuertoplata.com/uploads/1/3/2/7/132740620/pinupivuvojujoxa.pdfIn PDF document text
    • http://files.catherinehessart.com/uploads/1/3/2/6/132681851/495fb5e.pdfIn PDF document text
    • http://mapob.radiopigs.us/uploads/1/3/0/8/130874482/d7949aeb686.pdfIn PDF document text
    • http://maravifo.sassyarabia.com/uploads/1/3/0/8/130874426/2567911.pdfIn PDF document text
    • http://files.seymourcoc.org/uploads/1/3/0/7/130739802/6405797.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/1/0437/0461/5066/files/pivowikitasepejafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/pdf_to_editable_word_document_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/mejalewobigavinisavasebop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/wasax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/26843091871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.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 8

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_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 4828 bytes
SHA-256: 6b5828932a6204cd389ac7919d453ce8f45a9d0f77765834bee5a26a0f8882e2
font_01_sfnt_off00007384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7384 10472 bytes
SHA-256: 329314dc39681198db1a4ebabc718327f69d628395243ff0d34dc77388681b80

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