Malicious PDF — malware analysis report

Static analysis result for SHA-256 cccb8a7f66ac24d3…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 09:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 461482f2dd552442b80c9e36e2738cb8 SHA-1: a4977b649ecc78df59bb8777a637f7bb0b8a497f SHA-256: cccb8a7f66ac24d37707aec488bc223abff712d9498f7234dd202bb303a19939
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Springing tiger pdf' and the malicious URL, suggesting a lure to a malicious site. The presence of a malicious redirector indicates an attempt to lead the user to a compromised or malicious resource.

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=springing+tiger+pdf In PDF document text
    • http://files.theindianexpresskadhai.com/uploads/1/3/2/8/132816165/womapebisemoka.pdfIn PDF document text
    • http://files.montanoslandscaping.com/uploads/1/3/0/8/130814633/97bd0a1af29.pdfIn PDF document text
    • http://files.gmfcf.org/uploads/1/3/1/4/131437139/815767.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/1/0435/9513/7181/files/kanakadhara_stotram_lyrics_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5378/3967/files/accounts_payable_end_to_end_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/xunemijisagobunisaduleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/volume_and_surface_area_of_cuboid_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3179/5624/files/53419524772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/94797808040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/unicode_characters_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9655/6191/files/82590569551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/migavinilubapodoxip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/domestic_abuse_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4002/1407/files/36366604872.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
🗂 Part of campaign: cluesescaperoom.com 5 samples

Related samples 4

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_off00006e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E33 4892 bytes
SHA-256: e74a89e93b394f01f99c2c27c173ab268302ec3753be663f36254bad64d16761
font_01_sfnt_off00007eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EED 9976 bytes
SHA-256: 7d9224d4750ee74c9668af3dde64873cda79bd4e98da4d3ab28678c3939cb24d

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