Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1f1de8bf6ea721…

MALICIOUS

PDF

86.3 KB Created: 2020-08-20 19:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48b9c3fce2ed938b02f862231a568ad4 SHA-1: c8b3a482378be25de0400eb86f59773652e180dd SHA-256: 2b1f1de8bf6ea721963c039af489520c8c7b9794db25ae6ea4fc3e749ec33606
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the lure. This URL redirects to a malicious domain, suggesting a phishing or malware distribution attempt. No scripts were extracted from this sample.

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=embryology+questions+and+answers+pdf In PDF document text
    • http://files.multiscalar.de/uploads/1/3/0/7/130738812/c714497f.pdfIn PDF document text
    • http://files.purchasetheroi.com/uploads/1/3/1/0/131070713/fimidezevitumituw.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/1/0435/0862/9663/files/98891703815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/84480584492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1416/7450/files/office_for_mac_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/62416883852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/sajuxoxesanoxazademu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/47451941146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/bluestax_shut_off_ads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/76868791419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/bovivoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6059/1776/files/lagokikodiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/case_study_abstract_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7552/9891/files/losog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/gunujoxona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6769/4490/files/40804386534.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_off00011221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11221 5776 bytes
SHA-256: a0b35236aeb1ee08b2075392e7ff9b5727f6f2e251db5ca966bf3110a0f0d519
font_01_sfnt_off000125c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C6 10804 bytes
SHA-256: 1731e546c9e1e1a1986ac8f2998b58bb234f966a1f865f15003a73cdefa9eaf1

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