Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d90326a76959f4…

MALICIOUS

PDF

33.6 KB Created: 2020-08-09 04:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab975e3440a80f987397bec034c4bb96 SHA-1: 7c76b1520b186dc1036730d665dfd43fae883be4 SHA-256: 88d90326a76959f4a1c0e7e8a143e4e77425c3a68027ee869a213f67d4769531
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including a redirector link to a known malicious infrastructure and a lure for MFA/one-time-code harvesting. The document body, though partially corrupted, contains the same redirector URL, suggesting it's the primary mechanism for leading users to a phishing site. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=kit+aromatouch+doterra+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.davidensleydesign.com/uploads/1/3/1/0/131069766/9174616.pdfIn PDF document text
    • http://gaxawidus.eventsbyangel.com/uploads/1/3/0/8/130874284/gomadaga_gatek_nejebaroteluve_migopovunad.pdfIn PDF document text
    • http://files.steppingstonetuition.com/uploads/1/3/1/6/131606901/lamijakotuzuzof.pdfIn PDF document text
    • http://files.thecraft2draft.com/uploads/1/3/1/4/131453097/9991478.pdfIn PDF document text
    • http://files.souderlandscaping.com/uploads/1/3/1/4/131437755/6069427.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/1/0437/6284/3797/files/dijkstra_s_algorithm_matlab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8451/2418/files/fudunufagotusimalid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/miwofunavakelutumapefago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/administrative_law_book_by_c_k_takwani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fexofedome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3098/4357/files/vitakoxub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/35446905504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/bokemakepumilege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/zagum.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_off000043a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43A4 5576 bytes
SHA-256: ef9aa08d316a9d069b68092894d794355c41f9e98cd8e1a1754af0c6f8091099
font_01_sfnt_off00005631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5631 9912 bytes
SHA-256: f151f58860c51beee61e5cfc197ac03324c9af41935f879a38e907539ec7507a

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