Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc2ab0fffb7b79c…

MALICIOUS

PDF

51.8 KB Created: 2020-08-23 02:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c703110094d5d63aaa83a82c6b144a4 SHA-1: 650eac168e4b97dfc8234b02ba1955e3579e512e SHA-256: 1fc2ab0fffb7b79c7b6741638cc6bef45f6173df3688b689e9587f724c6daa61
194 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=carnatic+classical+instrumental+music+free, which is likely used to direct users to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack.

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=carnatic+classical+instrumental+music+free In PDF document text
    • http://files.burrisdevanney.com/uploads/1/3/1/1/131164556/4124640.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/1/0433/5481/6667/files/cuddledown_sloth_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/luwivajazodutugovasawevij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4010/files/ba_1st_year_english_book_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/66085989241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2558/8639/files/luxojiwopike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/74700733319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/free_blank_sheet_music_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/caiib_advanced_bank_management_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/befizunofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9010/7815/files/height_of_binary_search_tree.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/brazoria_county_tx_police_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/24588377186.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_off00008162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8162 4932 bytes
SHA-256: 322c72b5e8eaf6e6734262f2a832ca65109a22acaee3d4f2f6f07ebb6d4d4a4e
font_01_sfnt_off00009208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9208 15492 bytes
SHA-256: d4a71d51c892a1dfd1b9642e5163727718b503561c43976e341ebd9cebb874cd

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