Malicious PDF — malware analysis report

Static analysis result for SHA-256 832c23652f70602a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-20 18:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a89c36ec3bd5dde0a632b4d658aa45e SHA-1: 517f97fa3e60d0a2650074157ccff7ea7177d022 SHA-256: 832c23652f70602a5298dce6c8272fb25aaf96a6524da418c0403db911caa86f
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 attempt. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a redirection attempt to potentially malicious content.

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=mandated+reporter+california+elder+abuse In PDF document text
    • http://files.stepupanddosomething.org/uploads/1/3/1/6/131637498/darorijuzipa.pdfIn PDF document text
    • http://files.alankendallmusic.com/uploads/1/3/1/8/131856937/139e561221d45.pdfIn PDF document text
    • http://lupik.nostalgictreasures.com/uploads/1/3/1/1/131164250/09d3cc84f.pdfIn PDF document text
    • http://komeru.phoenixtattoos.site/uploads/1/3/1/6/131637814/kizafuzofixajo_napifibereribo_kivovasiv.pdfIn PDF document text
    • http://files.waypentecostalchurch.org/uploads/1/3/1/8/131856185/9262248.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/1/0427/8845/4559/files/20120261088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4456/1318/files/99408829485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6922/6656/files/kosuzaliluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/all_types_of_android_os_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0144/4514/files/53516068617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/93007882234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9365/9541/files/23721643100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9809/6284/files/longman_idioms_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/35703541737.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_off0000771d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771D 5292 bytes
SHA-256: 20b968b32526504b1098f049f89ae32f2c21b64a1c277fc9911d24bae350af37
font_01_sfnt_off0000891f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x891F 10248 bytes
SHA-256: 5718b30f3c0358e46a75049fb5703e3a7ede0e1ced9c58bab58954406cbe4cac

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