Malicious PDF — malware analysis report

Static analysis result for SHA-256 f81ee3a8e2459253…

MALICIOUS

PDF

43.8 KB Created: 2020-08-01 09:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 473a8f2e20b6b98783589c7399eb9a97 SHA-1: 87b9b8f897e4438dd2ddce7d61fffe45c669160a SHA-256: f81ee3a8e24592538c7ce994eb85135f6deb66a2f776cc4fcdcc3c469130f03b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text and embedded URLs suggest a lure related to an installation manual, likely intended to trick the user into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting the malicious intent of distributing harmful content.

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=honeywell+th8320u1008+installation+manual In PDF document text
    • http://files.valleyoftheghosts.ca/uploads/1/3/1/4/131408864/gilovetubixabiz_xewoze_wamudo_bomomekarile.pdfIn PDF document text
    • http://files.vallemagica.com/uploads/1/3/2/7/132710565/4c67f17eb909f.pdfIn PDF document text
    • http://files.laurawilliamsskinbiz.com/uploads/1/3/0/9/130969580/zukitapijufafo.pdfIn PDF document text
    • http://files.jmgolfcoaching.com/uploads/1/3/1/4/131407511/7263128.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/1/0428/1293/2255/files/xevotigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8879/6053/files/lukugotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7579/5099/files/joludefomivepaxijaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/gazinubodiposo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/kizaviruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7450/1273/files/nesisipagofufufagivijexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/29467147035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/pewol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/sarevemosubir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/zoxonadiwaxexowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/deguvobetilogijubuw.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 6

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_off00006c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 5668 bytes
SHA-256: a53c66ba29c098213d84c230af27f7c020f1c3831e028a1199df2f20f896914d
font_01_sfnt_off00007fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBD 10052 bytes
SHA-256: 562d717b14fe83b862e1e2682f282708b226f896d04f9c93102399680bcb27be

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