Malicious PDF — malware analysis report

Static analysis result for SHA-256 f188802870b85082…

MALICIOUS

PDF

63.9 KB Created: 2020-08-25 07:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f055e91404aa48675ce9dac4a323edc2 SHA-1: 6bf3f50020929b532a8718a195d612f9236b6412 SHA-256: f188802870b8508280c5d9fbe76e7a135388ef53c0d9b3cdb1cd8c1770947132
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. The ML classifier strongly indicated maliciousness. The document body contains the malicious URL, suggesting a lure to external 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.com/pify?keyword=orion+starshoot+autoguider+phd2 In PDF document text
    • http://files.olevelsciencetuition.com/uploads/1/3/2/6/132682239/9021444.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/1/0433/0687/7080/files/34680977850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5020/4316/files/patesopuvokowezov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/ancient_greek_democracy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/aadhalal_kadhal_seiveer_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2439/1067/files/buyers_edge_platform_waltham_ma_address.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/vefumagumazovomid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0809/1302/files/29498357086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/instagram_apk_apk4fun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/62637735889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/53580436368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/dabirutegatop.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 1

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_off0000bd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8E 5348 bytes
SHA-256: 1c5c741b3faf51b763323780c5307dd3403bc1e8a1b4e30f06dc4776da67c4ca
font_01_sfnt_off0000cfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAF 10252 bytes
SHA-256: ec9ded4e94fc757acedb0326089543c977ae411e49a511d0aaca25a0f5ed35bb

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