Malicious PDF — malware analysis report

Static analysis result for SHA-256 e271664729d64f7e…

MALICIOUS

PDF

42.6 KB Created: 2020-08-23 05:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec70074df7de6eefcea0229880b58761 SHA-1: e2ce053ba94b3ea6993ba0fd5ef66ef1c976ce9f SHA-256: e271664729d64f7e15a84112a56e80b31772362cb463b74b7933d498dc0e58c7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a redirector URL that includes 'college application essay examples pdf'. This suggests a social engineering tactic to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link further supports this assessment. No scripts were extracted, limiting the analysis of direct execution 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.ru/pify?keyword=college+application+essay+examples+pdf In PDF document text
    • http://files.monumentalconcreteworks.com/uploads/1/3/0/8/130874598/xozitojigerun.pdfIn PDF document text
    • http://files.communityactionboonewinn.org/uploads/1/3/2/6/132681293/78b0fb1ed6.pdfIn PDF document text
    • http://files.aep-edu.com/uploads/1/3/1/0/131069763/4a87c55e7753.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/1/0430/3070/8385/files/duvunolevuniseruxapipilin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/92865541317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/26514604491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8960/8360/files/science_experiment_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/63978724691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/wezuwawuzavug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/fawasaxijutapaxogixenewoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/tuxikojewebusutavifese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/business_plan_example_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/towap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/mofefitipiw.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_off0000694c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694C 5456 bytes
SHA-256: f383b546a74a02e27f292a4995aec1c89c33e7bc026282421e8597f1173b600d
font_01_sfnt_off00007bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD6 9808 bytes
SHA-256: f2e1a77d88761d7cbcd55d288a0b3cd3284e9a781881876d6e49ad49444625ab

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