Malicious PDF — malware analysis report

Static analysis result for SHA-256 39bd055343983f98…

MALICIOUS

PDF

54.0 KB Created: 2020-08-14 02:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bc0c9f15609469d66585bd24df7fbbb SHA-1: 6268d2baa40f8ca5807f396f10554f76660fe760 SHA-256: 39bd055343983f98cabef42bdcfa14a02665217b76624293fc7f8422fd3c5cff
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, disguised as a free song download. The PDF also exhibits a link farm behavior, with numerous external links, many pointing to Shopify domains, suggesting an attempt to distribute or obscure malicious content. The primary malicious IOC is the ttraff.com redirector.

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=amman+bakthi+song+free In PDF document text
    • http://files.sproutsmyanmar.com/uploads/1/3/2/3/132302863/giburapudiga-dojowul.pdfIn PDF document text
    • http://fijejus.anu-pola-architects.com/uploads/1/3/1/1/131164079/rugipara-vujaxadu.pdfIn PDF document text
    • http://files.arosenthallcsw.com/uploads/1/3/2/6/132681322/3cc6a.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/1/0433/0687/7080/files/kenetawibonilolususede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/jobej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5070/9671/files/cain_and_abel_packet_sniffer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/2477453481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2648/0295/files/97410383351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1551/0938/files/budatuletivubuxudor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/wederumejum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/adjective_worksheet_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/close_reader_collections_grade_8_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/reflection_refraction_worksheet.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_off00008faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 5340 bytes
SHA-256: e3ac8439505a2b627beb59d88a6144cbd0d44e927bce833c14cf91f151af01e3
font_01_sfnt_off0000a1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A9 13144 bytes
SHA-256: 46d59c6c3cd66aa7f094554341a274745be554939b60a5fa5599d9ef1afb6060

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