Malicious PDF — malware analysis report

Static analysis result for SHA-256 a063be8c0ad2099d…

MALICIOUS

PDF

45.4 KB Created: 2020-09-10 23:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3863a04aad2a437d6b31621645807a10 SHA-1: a9358fa0de1a9a15d754f795aef2ee4cf5be4c33 SHA-256: a063be8c0ad2099d64140c2e46d4e671e10a15584b3f19701ee54abd25ba4d93
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, indicating a phishing or scam attempt. The document body, though corrupted, suggests a lure related to crossword clues. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external PDF links further supports a malicious intent, likely to drive traffic to malicious sites.

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.club/wix?keyword=list+of+cryptic+crossword+clues+and+answers In PDF document text
    • http://files.jenniphelanphotography.com/uploads/1/3/0/8/130874489/3822705.pdfIn PDF document text
    • http://files.oceansurfsounds.com/uploads/1/3/0/7/130740521/soxuxagexejexo_wofife.pdfIn PDF document text
    • http://files.genegousiecoaching.com/uploads/1/3/0/7/130775436/momog_buvekimifaxew.pdfIn PDF document text
    • http://files.mgbbsewing.com/uploads/1/3/0/9/130969704/eaa98185d4.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/1/0436/0821/1619/files/xubugunanukopuwewuzivaje.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eed56f_70613ce62bee4e10ae05023ce3f0a136.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4c3d6a_74c3c192c57f47d3ae37ee90457a4ca3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2d1648_20663d180e114f50a2cd57ab57a58948.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a771bd_f129113b3be74d088b9395fb4ef2487b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/kikasexisodanatimozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9885/6871/files/46735098536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0219/3062/files/maintenance_of_agricultural_machinery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/pathophysiology_of_gestational_diabetes_mellitus.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_off000072b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B0 5284 bytes
SHA-256: 82576470bcb5a123b98f978725a7ede509a0dd3372aba12363fe59b2891dfc65
font_01_sfnt_off000084d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D7 10512 bytes
SHA-256: d49a2a0179096a1a8febf56bb64eb89bd40ca71a2f8577701845bb50deeb4778

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