Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc66f35a422f0ac4…

MALICIOUS

PDF

46.4 KB Created: 2020-08-24 14:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f3f50671033c5ebd30e77c180a8e4f1 SHA-1: 66cd2e4961122c8cdb020b867825c09d32de8a28 SHA-256: cc66f35a422f0ac4461c42aaf0dbe482b6be6db59c791ac36d6867a6d609e7c7
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=income+guidelines+for+medical+in+pa'. This URL is embedded within the document body, suggesting a social engineering lure. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on shopify.com. The primary malicious IOC is the redirector URL, which is likely used to lead the user to a further malicious destination.

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.cc/pify?keyword=income+guidelines+for+medical+in+pa In PDF document text
    • http://files.suearchibaldart.com/uploads/1/3/1/4/131414134/dusonuserunixub.pdfIn PDF document text
    • http://files.scuttsdrivingacademy.com/uploads/1/3/0/8/130874469/4931291.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/1/0431/7403/5607/files/48265845039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2440/7961/files/41528985888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/ramorugugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/sample_cheer_tryout_score_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/make_row_fixed_in_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1508/9825/files/70571055372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2527/files/30706783396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/34474933462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8407/9523/files/40498367582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/52753275938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/pictionary_rules.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_off00007748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7748 5412 bytes
SHA-256: fa7b6de12b75d439cc4fa387feb5c040cc6ed031b62ce152c2602fb0ee6c3f72
font_01_sfnt_off0000898f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898F 10408 bytes
SHA-256: 98ac95d31413dca6d408d6e37331889917417aef7d23d08e8f49615dbf6563a4

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