Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e804bcc01a7215…

MALICIOUS

PDF

37.6 KB Created: 2020-08-13 05:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e831e02ea78b0531310f623c63f6b1f1 SHA-1: 049808c374d907fecbf80419750094c0d9d7a951 SHA-256: 50e804bcc01a7215dff7f51f65ecdd93d4cd542609d3e2af8387a6f70e75798b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though partially corrupted, includes text suggesting a lure for 'construction accounting and financial management pdf download' and the malicious URL. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or SEO poisoning attack.

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.ru/pify?keyword=construction+accounting+and+financial+management+pdf+download In PDF document text
    • http://files.ithacaymca.com/uploads/1/3/0/8/130874691/satetazaradadus.pdfIn PDF document text
    • http://files.sunbirdtravels.com/uploads/1/3/0/7/130739570/luvagama.pdfIn PDF document text
    • http://files.jonathandearmusic.com/uploads/1/3/2/3/132303359/9ec48265ab860.pdfIn PDF document text
    • http://files.cierrasedgeamstaffs.com/uploads/1/3/2/3/132303151/3d9adddcee.pdfIn PDF document text
    • http://files.distribucionesfrilav.com/uploads/1/3/0/9/130969358/waruxikajefepuj.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/1/0429/0818/8839/files/vubusuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6029/1742/files/accounts_receivable_management_policy_theory_and_evidence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/57277323244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5442/2423/files/27814512704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/33470589388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7977/7945/files/adjectival_phrases_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/tipigofowazagugekajuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/40966086868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3935/7093/files/chloroacetyl_chloride_msds.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_off0000543c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543C 5472 bytes
SHA-256: f06c8ec98b077fafa56732f64f32519f24f8d1e2426c1bf9059c21ad3b8584c3
font_01_sfnt_off000066cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CF 10020 bytes
SHA-256: d98343fdd960fee9b68e101c110a8a47d3be9b90b5ff3b8bf01b2cc4a35de8e9

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