Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8bfb0875a1812f…

MALICIOUS

PDF

58.0 KB Created: 2020-08-17 09:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6234ec35ce061d575cfa032819dbf944 SHA-1: c6f518a43930db075a48a04d7c5736408915e56a SHA-256: 2f8bfb0875a1812fd120d064e798226d1456538b02098ffe386f37b43a4ef319
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Haemolytic uraemic syndrome treatment guidelines' and includes the malicious URL. This suggests a lure to trick users into clicking the link, likely for phishing or malware delivery. The presence of numerous other PDF links, many hosted on Shopify, points to a link farm strategy, potentially for SEO poisoning or distributing further 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=haemolytic+uraemic+syndrome+treatment+guidelines In PDF document text
    • http://fivezo.localzak.com/uploads/1/3/2/7/132710621/2880724.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/1/0433/4613/3157/files/suxulejomojoladu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4744/files/protibad_bengali_movie_720p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/97746313015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7735/files/7765877102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/hunter_alignment_rack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/alesis_nitro_mesh_kit_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1044/6744/files/short_business_plan_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2066/2422/files/vodabarimevuvijukovuvow.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
🗂 Part of campaign: reslifechurchaz.com 3 samples

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_off0000a59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59F 5320 bytes
SHA-256: 26948ec245b0c38b1f0fcdfdcaf39d5d02f0a1d9e4c1365a7703384b1130071e
font_01_sfnt_off0000b7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A9 10480 bytes
SHA-256: 2195d99dd1e146cc17394a85c47ca41c3fcb6f763690a261b0218f3c4659107b

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