Malicious PDF — malware analysis report

Static analysis result for SHA-256 a15b1862b40d7911…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 02:12:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74c8178dffcfb90a15f93b1f8c957f61 SHA-1: 46c14cd9fa69ee54fcdf782106c46630a812c83f SHA-256: a15b1862b40d791112c8b06ab73e4dca108f9ea6a8f8eb6c67781c8abd17cda9
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Chicago cubs pitchers and catchers report 2019', suggesting a lure to attract clicks. The presence of numerous external links, many pointing to Shopify-hosted PDFs, indicates a link farm strategy, likely for SEO poisoning or to obscure the final 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=chicago+cubs+pitchers+and+catchers+report+2019 In PDF document text
    • http://files.truelight-photography.com/uploads/1/3/2/6/132695492/3162287.pdfIn PDF document text
    • http://mexana.rivervalleyobedienceclub.com/uploads/1/3/0/8/130874683/2980818.pdfIn PDF document text
    • http://files.oregon-photos.com/uploads/1/3/1/3/131379716/wikiniza-romebozito-sitasu.pdfIn PDF document text
    • http://xapeg.theb12stores.com/uploads/1/3/1/3/131398521/b0389be12fe931a.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/1/0429/6825/2565/files/xabimebejugazuperiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/nezumusutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/51489435462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/vupemoboxozoxonebexurazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/fuzoreg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4196/3679/files/zeroxuloziri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1078/8261/files/counseling_and_therapy_skills_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/the_appointment_in_samarra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6158/3776/files/boverakuxibiva.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6912 5832 bytes
SHA-256: fefbfa91a0df6827d6a2d610c9989ddc4ded2c6b0e62eb2482bf7d94335f1f18
font_01_sfnt_off00007cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD6 10340 bytes
SHA-256: c7a5ce13135d99cfa5c51b076619fae2cd9d5dce519e0a07988f248d9bec7ff5

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