Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3246f833e9d3f2…

MALICIOUS

PDF

91.4 KB Created: 2020-08-20 21:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c2181e890cff6e6515d14b42c59c07b SHA-1: feb92772cf3d59c6d435845555e00c8cdd8023c4 SHA-256: de3246f833e9d3f228709767a3f985ebb5c3aadc42b456a48c4ed23c1c52f8fd
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to its inclusion of a link to a known malicious redirector, ttraff.cc. It also exhibits characteristics of a PDF link farm, hosting numerous external links, many pointing to Shopify domains. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the direct user-facing lure.

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=transformers+4+autobots+names In PDF document text
    • http://files.deborahtekawa.com/uploads/1/3/2/6/132681194/3056790.pdfIn PDF document text
    • http://sodilus.coachminda.com/uploads/1/3/2/3/132303382/matetilirezal.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/1/0436/9743/8875/files/lufajukalevibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/google_books_download_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3830/1594/files/school_maintenance_plan_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/nepesavopumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9177/8965/files/tavituzevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/senudujaravewazovarogudub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/mikisoviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3773/4550/files/pdf_catalogues_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3020/8924/files/gifaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/10282037646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/21109726086.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 2

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_off000112e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E3 4892 bytes
SHA-256: 57c275d70f0cc127a207d15f7d92b30ce0d4c9baae62c80da212237976fcea36
font_01_sfnt_off00012360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12360 14820 bytes
SHA-256: 65f7ef9a286abb2982596715c441aad053ed2c5d81f2908fe27d32d5555461ad
font_02_sfnt_off00015211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15211 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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