Malicious PDF — malware analysis report

Static analysis result for SHA-256 c051700e9ec42453…

MALICIOUS

PDF

45.2 KB Created: 2020-07-30 17:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfb723804ae4a56ca58f433b3f2a721a SHA-1: 539ca475bfb86d9cf7aa5d8d8b03041701a7ff63 SHA-256: c051700e9ec424534114682dc4eaf54c4cab2b58ea558d6632b3972138f2b816
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'ttraff.com'. Another critical heuristic indicates a PDF link farm, suggesting SEO manipulation or a phishing lure. The ML classifier strongly supports maliciousness. No scripts were extracted, limiting the ability to determine specific payload delivery or persistence mechanisms.

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=pulmonary+hypertension+treatment+guidelines+2020+pdf In PDF document text
    • http://files.cornishquest.org/uploads/1/3/0/7/130739039/xileriralomi-finotarofiginek-gixesife.pdfIn PDF document text
    • http://files.marengofc.com/uploads/1/3/2/7/132740584/1492302.pdfIn PDF document text
    • http://files.thesouthmillschurch.com/uploads/1/3/1/8/131857193/pexokomu_gegigo.pdfIn PDF document text
    • http://files.mozart-engine.com/uploads/1/3/0/9/130969811/kisuxetekowon-nomusavaje-piziva.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/1/0433/0687/7080/files/30072581460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/85322483469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/nusizavuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/boxowelotofuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5770/8185/files/rapijag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/62826211828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/fibevegusopakej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/gemaluvumufebabema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/24287857755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/91869751982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/gofene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8104/files/lexokizaga.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_off00007082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7082 5716 bytes
SHA-256: 9fd74f420d617b1812031787042b521f433ead4dfe59fc47d7d4336579ed8be3
font_01_sfnt_off000083d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D4 10360 bytes
SHA-256: e62e89d9a9042da620c42b332b41efcb662fa53628f1d9e219b64caae027d5fc

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