Malicious PDF — malware analysis report

Static analysis result for SHA-256 c124c7b764772ff2…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 23:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 374d44d667e65cf42a0a748234214659 SHA-1: 404782b6f3f2938a9774eddb037b732938708309 SHA-256: c124c7b764772ff2e04f5c8003f8a0b9a3b5ee153d95cf8161a47938ea793a9b
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, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.com, which is configured with a search query for 'siemens openstage 15 hfa manuale italiano'. This suggests a phishing or social engineering lure. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=siemens%20openstage%2015%20hfa%20manuale%20italiano In PDF document text
    • http://files.quasilocum.com/uploads/1/3/2/7/132740606/pipazamaviduz_joxobiparor.pdfIn PDF document text
    • http://files.vintagepercussionsoundeffects.com/uploads/1/3/2/6/132680901/84e4a699a.pdfIn PDF document text
    • http://files.pearwinkle.com/uploads/1/3/2/6/132682974/954fd8a4.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/1/0432/4658/3976/files/40090294142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/ziwupurafov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/38558184636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6318/1473/files/12750986032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0069/0848/files/sewing_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93016620893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3846/6471/files/crp_blood_test_normal_values.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/62736985275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/tidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/8895608848.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_off00005910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5910 5500 bytes
SHA-256: 3d28d2796303637e9ae7f450e7a73c21d4d07199b1d2331de0bfd0076e1c314a
font_01_sfnt_off00006ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA4 10792 bytes
SHA-256: 51922989399adbc5aa5f2c7605c0454a38dee24b35bf87d1c54c3ff94d2b38e7

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