Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2db33d85052cf32…

MALICIOUS

PDF

42.5 KB Created: 2020-08-04 16:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78fa8d3eea3f03251dde6aa0440ae0bb SHA-1: 8f527478349eeedbd03a75ef6ace328ac85f9287 SHA-256: f2db33d85052cf3200f8a542671c458b3879935813a9ccec303c5b6ce202b303
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL pointing to a redirector service. This suggests the primary goal is to redirect the user to malicious content, likely a phishing page or malware download, disguised as a resource for 'architecture design pdf books'. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=architecture+design+pdf+books In PDF document text
    • http://files.shaltmira.com/uploads/1/3/0/7/130738933/gakolape.pdfIn PDF document text
    • http://files.saphotoservices.com/uploads/1/3/2/3/132303322/moditenekij.pdfIn PDF document text
    • http://files.inspiringrolejewelry.com/uploads/1/3/0/7/130776126/menifijagomobom-sepakexigoxekuk-vedelisano.pdfIn PDF document text
    • http://files.orlandokb1.com/uploads/1/3/1/4/131452811/febivi_rurade_gejuraguxok_wizogaxumageji.pdfIn PDF document text
    • http://files.appletreecontractors.com/uploads/1/3/1/6/131607712/9709263.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/1/0435/3458/1911/files/cooking_calc_rs3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/39535025590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/luxisovegejev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/98600703720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/gexekalikuzovuwifusivam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/13627996573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/pemutegizimerodifolimewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/betotivetepomazomef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0157/6602/files/princess_diana_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/7894092548.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 8

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_off000067f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F9 5368 bytes
SHA-256: db6c501bf66361cdd1fecb6c21bfb693504276db416a460d66e6e19689303952
font_01_sfnt_off00007a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3B 10356 bytes
SHA-256: 653335f7335c112c7959411ad8e2fb97fb14d8f2345ccac609cf50ea3a61e14d

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