Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f010ae4fe58886…

MALICIOUS

PDF

42.4 KB Created: 2020-08-14 11:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c481811057ca6b7dee14c5fa56ee99a SHA-1: 3b67881ef69a17cc37292db9f17268109a88cb3c SHA-256: b5f010ae4fe588867304cc0ce605c37745a28b83a25c6dbb47a4be6e52ccb682
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to sheet music and a URL that appears to be part of a link farm, suggesting a lure to entice users to click. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=audition+la+la+land+violin+sheet+music In PDF document text
    • http://files.ustercollageart.com/uploads/1/3/0/9/130969992/wozonefaz.pdfIn PDF document text
    • http://files.stpatsla.org/uploads/1/3/0/7/130775865/da08aa.pdfIn PDF document text
    • http://files.crestlinepto.com/uploads/1/3/1/3/131398323/laponajuke-lamajawe.pdfIn PDF document text
    • http://files.evandusenportfolio.com/uploads/1/3/1/4/131437633/gowidogudewofu-lodufesuzugip-gexevi-kakusokitikej.pdfIn PDF document text
    • http://nonazok.devinjamesbaldwin.com/uploads/1/3/2/8/132814930/a8fa5787.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/1/0434/5783/9254/files/58527142700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/92519341100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/genetically_modified_food_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5376/3999/files/cecilia_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/dinijinibir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/40771057046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/lexukipirefuxejekinawewas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/43659014890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/mazizeref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/54822777398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/folagadufewoputejaxusif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/95317273131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/maxesiji.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_off0000693b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 5132 bytes
SHA-256: 29340b2f4a5bb6eeca189171e51dcba8381b0c383e42890d25e5f61b0116cfbd
font_01_sfnt_off00007a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A84 9904 bytes
SHA-256: 36b2a2a6d3f4f103f51ad857405ee868be90e772405618714c28aaff79e10f62

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