Malicious PDF — malware analysis report

Static analysis result for SHA-256 82adc89bd223928b…

MALICIOUS

PDF

45.5 KB Created: 2020-08-24 03:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f954e864e7d099f0475291a35fa5a94 SHA-1: e44852248f66f83596fba701bb6cb645a90b3527 SHA-256: 82adc89bd223928bfea928f53cd34e664d2cdcfa1066603bfb7f646901d9af39
194 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that point to a redirector service, which in turn leads to a link farm of other PDFs. The primary redirector URL is associated with malicious activity, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a phishing lure.

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=equations+of+linear+graphs+maths+genie+answers In PDF document text
    • http://files.braeburn1898.com/uploads/1/3/0/7/130775033/xovikawima_juxugi_nipizopajid.pdfIn PDF document text
    • http://files.gradeeight.nestmusic.org/uploads/1/3/1/4/131453021/wuvovi.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/1/0432/6896/4505/files/76886043765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7434/5365/files/51713747111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/kelamavuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/51839710236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/wofarifuxerofanad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/organizational_chart_template_excel_2010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/28585126917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/kukezuxowisofebamepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/skillet_comatose_album_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9370/4356/files/17958157109.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 5

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_off0000733d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 5488 bytes
SHA-256: 6d863e068ce1c6fd9b86c8fa66eca6fb4191d66fae83a825fdfaea8e373c4fc7
font_01_sfnt_off000085d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D3 10348 bytes
SHA-256: 6861f51c8bb9271ef1db8b20edfb2c709eceada47786b619220acb6e0f4591a4

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