Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e15611bb798828…

MALICIOUS

PDF

37.6 KB Created: 2020-08-15 02:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1137530163cf83ba150e2511b07ce25d SHA-1: 7287958f859436644c2ab6dc7edb045ab780b7c5 SHA-256: 62e15611bb79882837d7509ba95dc1baae2ed7abdfa891a3385ac4fbccc54b2b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to 'future tense worksheets' and a URL that is flagged as a malicious redirector. This indicates an attempt to trick users into clicking malicious links under the guise of educational material.

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.cc/pify?keyword=future+tense+worksheets+5th+grade In PDF document text
    • http://files.bcchildandyouthincareweek.com/uploads/1/3/1/4/131452997/gofirefex.pdfIn PDF document text
    • http://files.kattiebees.com/uploads/1/3/0/7/130739251/tejug_zutebogisega_dogusu_redipo.pdfIn PDF document text
    • http://files.muslimpraynplay.com/uploads/1/3/1/4/131437276/89f486d3a0.pdfIn PDF document text
    • http://files.thbmed-rescue.co.uk/uploads/1/3/1/8/131871535/xemedepixasejidod.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/1/0435/2655/3755/files/davorurotewoduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/xoxunon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/pifawaxaralifugidutom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/37723019974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/gabudunusukizulixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/kuvibekalunasag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3387/files/counter_strike_1._6_free_macbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/ramiwokiraja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/osu_aim_trainer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/sokiri.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 4

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_off00005442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5442 5288 bytes
SHA-256: 61f91cf7a2975e5710a080bd84d7bd612b87ffda20b261c483939caad3a3a808
font_01_sfnt_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 10212 bytes
SHA-256: 8e2145970c376d1cfba3a1c4c0af11ae29501a7c69502abc21a7f5c9772f6e64

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