Malicious PDF — malware analysis report

Static analysis result for SHA-256 059d578da3905f08…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 14:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77aab5fde69f972b3fbf96447cab6a8d SHA-1: e90b9c49ff897fc2775a8731d4d80ab390f89aed SHA-256: 059d578da3905f088c467c0a1f8b466bda3225e1e0d960489daeef09c8321982
202 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains a reference to the malicious URL and a lure related to a permission letter. The ML classifier also strongly indicated maliciousness.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=permission+letter+to+be+absent+from+work+pdf In PDF document text
    • http://files.lauraspreciouspomeranians.com/uploads/1/3/0/7/130738769/tuduxafatid.pdfIn PDF document text
    • http://files.addylucandles.com/uploads/1/3/1/4/131411088/4e167.pdfIn PDF document text
    • http://wagelen.ieperiostudyclub.com/uploads/1/3/1/4/131483083/3748886.pdfIn PDF document text
    • http://files.reedsburgambulance.com/uploads/1/3/1/4/131409200/0d488f139c7a5e.pdfIn PDF document text
    • http://files.justicefordrew.com/uploads/1/3/1/3/131384709/fowoxitizuwobudu.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/1/0434/4774/6721/files/14979721982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/38154798159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5639/7474/files/kijasazawijowatosom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8151/files/kansas_sampler_olathe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/timadaweputigiteludirenif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/a_first_course_in_abstract_algebra_fraleigh_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/pamiganotenowunexugofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/alcoa_fastening_systems_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/applied_microsoft_business_intelligence_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/28308920293.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_off000065f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F4 5484 bytes
SHA-256: 9e59bebb1f3f1a7124b21cdd67e8f13d492e91e5598245bd9bc3e8f78080cac9
font_01_sfnt_off00007885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 9972 bytes
SHA-256: 58f5f0f5594f175773240fce7a608350844b4a5964c379c9eb5b8d1b52cbb26e

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