Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26f419fd3739643…

MALICIOUS

PDF

33.7 KB Created: 2020-08-21 17:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f58a54b969e4e0b5ec9daab69df8cdc1 SHA-1: 0b0e3917e053b4a638d2f48bebbd85325bfd367d SHA-256: f26f419fd3739643bf6756b81462e15fd9b0d06472b9f6636296693e08e9a066
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text related to 'backgrounds for adobe photoshop' and a URL that appears to be part of a link farm designed to manipulate search engine results. The primary malicious URL identified is https://ttraff.cc/pify?keyword=backgrounds+for+adobe+photoshop+7.+0+free, which redirects to other content.

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=backgrounds+for+adobe+photoshop+7.+0+free In PDF document text
    • http://pijitepa.the8blockfitnessstudio.com/uploads/1/3/1/6/131637021/1196684.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/1/0431/0227/3703/files/74953123935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/43263847987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/big_ideas_math_algebra_2_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8716/6628/files/keboliratupeforumajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/averages_and_range_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/drake_all_me_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6126/4035/files/raid_shadow_legends_mod_apk_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0379/7916/files/canoe_kayak_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/radicales_libres_en_alimentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2411/4076/files/21340873389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9747/3699/files/sowipowelavos.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000452d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x452D 5892 bytes
SHA-256: f280887453c3e144b60d98dbab8757d7d8013065cadff381b1558531c83a3c87
font_01_sfnt_off00005938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5938 9580 bytes
SHA-256: 8862e3db2a9369fb6eafdadb70eb133b9070e1a80ccb0d7199820b4a3f57fa6d

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