Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2c5b2d255272e0…

MALICIOUS

PDF

41.5 KB Created: 2020-08-28 06:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5fc6ecddb2e169511aa9a6fa0fa0ad8 SHA-1: 2cdbf0745ac626087dcc53bb8957e76c6ea0e33f SHA-256: 8a2c5b2d255272e0d55d363fd4df442c09cf054c9011ff6257b98e7270311841
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=shapes+worksheet+activities+for+kindergarten', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted, but the presence of the malicious redirector and the link farm heuristic strongly suggest a phishing or redirection 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.cc/pify?keyword=shapes+worksheet+activities+for+kindergarten In PDF document text
    • http://files.pictonlittletheatre.com/uploads/1/3/1/4/131436981/rafimixexegitit.pdfIn PDF document text
    • http://rotaxoj.lauramnutrition.com/uploads/1/3/0/8/130814328/xiwirite.pdfIn PDF document text
    • http://files.moonlightweddingservice.com/uploads/1/3/1/1/131164520/sebominex.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/1/0430/3139/6503/files/72979386727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/35420672731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/dakek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3488/9627/files/description_of_a_person_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/49887463057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8632/9509/files/memo_template_caf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5119/6314/files/kumamapakarumopuderolajak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/ruxuzeguzitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1706/files/mabidakaduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4278/0837/files/all_words_in_english.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_off000061df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DF 5704 bytes
SHA-256: cd7cc144fa2a5bb7f962d4941bbc8760cd148c9538383455047ef423f0c3f7e2
font_01_sfnt_off0000755e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755E 10412 bytes
SHA-256: 533ebd4886fff4b9d708578c8c6786bbc6023a62aee7c6546d895a4580fb3c97

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