Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6255af4ca22b36d…

MALICIOUS

PDF

50.4 KB Created: 2020-08-07 08:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ba16e7b1977fdc8c9586fb93da8d1f9 SHA-1: 1dfe7f8a1ea286aa678db4903beef2c3e93cd73a SHA-256: c6255af4ca22b36dfdf9b5c5876ba5b8d6601b09c3a576b36f786c8482156188
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. This suggests a tactic of disguising malicious links among legitimate ones to evade detection. The primary malicious URL identified is https://ttraff.ru/pify?keyword=watercolor+painting+tutorial+for+beginners+pdf, which is likely used to redirect 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.ru/pify?keyword=watercolor+painting+tutorial+for+beginners+pdf In PDF document text
    • http://files.rebeccawooddesigns.com/uploads/1/3/0/7/130739163/xofejajozatuxe.pdfIn PDF document text
    • http://files.collection-me.com/uploads/1/3/2/8/132816195/bc6f4cdc2c0.pdfIn PDF document text
    • http://files.stemonline.org/uploads/1/3/1/0/131070938/potaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/stardew_valley_crop_layout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/kubukuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/16471256601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/bomukawuwopogixoweromelep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/canon_imageclass_mf3010_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/12596937712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1887/1207/files/tobaxupanegemezopuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/tigelix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3834/files/autodesk_inventor_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/caterpillar_generators_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9141/5460/files/strength_of_materials_book_by_rs_khurmi.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABA 5356 bytes
SHA-256: 8a6806a92f370b8475c5620335b449c672114e7a9296b43ed7140d8b6830d0a6
font_01_sfnt_off00008d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D01 9788 bytes
SHA-256: 7432f5fed9711b3b95b8125d6979445c70666d93595c5c5b68a5f9cab2fb4441
font_02_sfnt_off0000ae11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE11 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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