Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1293cdbee011fb7…

MALICIOUS

PDF

39.0 KB Created: 2020-08-21 12:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad39c86ca58967e9e1440cb6dbeae4b7 SHA-1: dfdde5649b8e34d90772e18855f38e54dc8a1191 SHA-256: b1293cdbee011fb78c1d42f0e44489ed10a70eb84ab27072804490f3149a2666
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a string that appears to be a URL related to 'iphone 11 live wallpaper', likely a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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=iphone+11+live+wallpaper In PDF document text
    • http://redom.ipksportsbetting.com/uploads/1/3/1/8/131857252/xulubafude_fowiwu_sowelorujigeb_kamagigo.pdfIn PDF document text
    • http://files.educatepa.com/uploads/1/3/1/4/131438804/7356945.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/1/0435/4008/6935/files/70730313418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/cambridge_english_proficiency_practice_tests_mark_harrison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/pagud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/2020_awards_current_affairs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6418/5247/files/wuxufogugeriga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/autodesk_sketchbook_app_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3725/5838/files/shapes_worksheets_for_kg2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/welinoxoromuwutizefawole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/82487742346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/book_design_ideas.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 5

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_off00005d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D54 4872 bytes
SHA-256: 09394dd698feef2896c29275c75b16e8220ecbc5681b250c4268ebccfa0c0414
font_01_sfnt_off00006df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF0 9772 bytes
SHA-256: 23697c158fd17e53d9171fa47b171e7d7ab36930b153caa2428bb57235180af5

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