Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2709656172619a6…

MALICIOUS

PDF

53.1 KB Created: 2020-08-02 17:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1a0491c7a8d3cc62dd8fda2af4a1285 SHA-1: e81c0314b0474967e56cefd5dd6d6e3368c989bc SHA-256: b2709656172619a6f618a9a7e8e45446894317737f6ad66d908aed42a418e960
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=lol+sejuani+build', which is designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a phishing or redirection scheme. The ML classifier strongly supports the malicious nature of this PDF.

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=lol+sejuani+build In PDF document text
    • http://files.darrellanded.com/uploads/1/3/1/4/131407088/95ba5b93026a44.pdfIn PDF document text
    • http://files.learningcafe.us/uploads/1/3/1/4/131437926/ba0b18bcc2e6e.pdfIn PDF document text
    • http://files.longjourneyhome.net/uploads/1/3/0/7/130739287/perovibu.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/1/0431/3009/3728/files/gajalijuvitexutaliri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/65675130623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/39556404169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/23291094154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/91529793464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/sowebugosaxilemetok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/49735047354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/kerajadesetiruvadojijet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/kuwigiwuzeturadowadod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/sukubof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/59255030892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/taluvebifulapunujuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/71762093881.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 7

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_off000078b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B5 4684 bytes
SHA-256: 86413889889b7c5173cad9a07e4a546a34b82a54c5e5bd7661e6487ade4fe144
font_01_sfnt_off0000889e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889E 15956 bytes
SHA-256: ba78b528d6f1ecf34e6a44aacb84765b032dcf41af81dbc3d57cf0a3ac96e3b5
font_02_sfnt_off0000b975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB975 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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