Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8daa8231adf534…

MALICIOUS

PDF

62.4 KB Created: 2020-08-07 23:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab48927add58b06502bb9fa81c30200c SHA-1: 48b4cc19407f5259b493a182f9c5102d7e97c5c7 SHA-256: 8b8daa8231adf534c354b812cfbb5110ba45fa1677c5a746c8ac648f00650a7d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=administracion+de+peque%25C3%25B1as+empresas+anzola+pdf'. This indicates the document's primary purpose is to lure the user to this malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to improve the ranking of the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=administracion+de+peque%25C3%25B1as+empresas+anzola+pdf In PDF document text
    • http://files.deeprootscider.com/uploads/1/3/1/4/131438419/9760240.pdfIn PDF document text
    • http://kosep.besttoyou.net/uploads/1/3/1/1/131164250/kinopudadon-wadekemus-kowiwe-kigar.pdfIn PDF document text
    • http://files.wccperk.org/uploads/1/3/1/4/131483184/9504171.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/1/0437/4511/6311/files/jenerasemutuzopepusuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/domasugazas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/andrea_camilleri_libri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6802/files/aqua_rite_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/31597594827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3711/1973/files/5716357631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/52278066981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/xiwokilamed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2621/7120/files/mad_catz_rat_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8349/7621/files/chinese_characters_a_genealogy_and_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/4237/8652/files/algebra_1_common_core_textbook_online_free.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 3

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_off0000b1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DE 5680 bytes
SHA-256: c003d69f9eaec818866b7f74856412ba8602e8794807f4cc64ed1ed56288e2e3
font_01_sfnt_off0000c4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DF 11464 bytes
SHA-256: 6cdf3f239af168e8bd5de459be80f78ed601022551106546a0ad47bc5635de0e

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