Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f1493fef7b24ab…

MALICIOUS

PDF

48.4 KB Created: 2020-08-29 18:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b84072d1fa7fd1b15d2ac7d6ae430ab SHA-1: 0d0373df7d0a6931e56debdddba18276dc2f4f4a SHA-256: 48f1493fef7b24ab7156ee036b141d928b210f33310fe70302d5dcfe2df584cd
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware delivery. The document body itself is heavily obfuscated but contains the primary malicious URL. The presence of numerous other PDF links suggests a link farm for SEO poisoning or traffic redirection. No scripts were extracted from this sample.

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/wix?keyword=multiplying+polynomials+using+foil+worksheet In 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/1/0432/7673/0533/files/lobasewove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9083/6632/files/nevijugefimazuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6620/3029/files/70525399597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/39504524820.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6d9b459787ec429eb78af5b7178c33a1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/xiwivevelowesepozotuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3143/7983/files/prolapso_de_cordon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/wepilalotujotidupoki.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/affaa6_84db987a89c64db9ba134269ecd6b46e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2d41640d3c184fca8f35edf71921ecee.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E71 5580 bytes
SHA-256: 3fe437756b1d5f511eb02216c7b348c60c133d4b1575cfb4735b2a0fc2e8faa7
font_01_sfnt_off0000715a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715A 14396 bytes
SHA-256: 4b05cb590412521cdb7634a63426cf342d567ccf0e242055e44c4ae320e7d67a
font_02_sfnt_off00009fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FBD 16080 bytes
SHA-256: a534b91c4ec3d8756e3a834051570443c69e75f38d6508a28567570861ffac3d

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