Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50bcb19d76384eb…

MALICIOUS

PDF

48.0 KB Created: 2020-08-07 05:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e85b4ec27e5e1b392064719f24efd34 SHA-1: c29c86098621f45af64cbff797f45ac91d2a9f7b SHA-256: a50bcb19d76384eb14b3887bb7c31ad23aa2465557d2bff992e60971999d56a8
234 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to known malicious redirector infrastructure. The document body text, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting an attempt to trick users into clicking the link. The presence of a password archive lure heuristic indicates a common tactic to bypass security scanning by encrypting the actual malicious payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=cctv+camera+dvr+installation+pdf In PDF document text
    • http://files.udistrict.micromemphis.com/uploads/1/3/1/0/131070374/tekimep-tilapuwesut.pdfIn PDF document text
    • http://files.p4partyproductions.com/uploads/1/3/0/8/130874652/0c3d417e46.pdfIn PDF document text
    • http://files.shaneproductions.com/uploads/1/3/2/6/132681391/gidabewarazu.pdfIn PDF document text
    • http://files.davidleakeesq.com/uploads/1/3/2/6/132681670/zurifif-besusuxuravix.pdfIn PDF document text
    • http://files.monfortestatesdacula.com/uploads/1/3/2/6/132681002/226bb98.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/1/0431/0584/5397/files/forokafoxororazas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/63940598448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/viralaxibokaxisulus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7702/files/45725249464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/nupoxugewezevipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/keline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/webevabup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/cursive_alphabet_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/78018315745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/72684601302.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_off00007e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E03 5264 bytes
SHA-256: 0ec5d23ed7539088bf74d5f2f0cfe5af7da02b8d51d0474286ba0898635e2516
font_01_sfnt_off00008fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD7 10420 bytes
SHA-256: c286f9f03df58e705d783915f647f230aa4f97d3baa27c2d99da2bbae1eba2e2

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