Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52220d4f3a98674…

MALICIOUS

PDF

44.9 KB Created: 2020-08-03 05:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 133019a22b664a6c90a05eef57556869 SHA-1: 088b40f406fb69ad1f764ea868fd9ff45a0d5a05 SHA-256: e52220d4f3a9867497ddee5fea46920be63262280a5a4dbf8f2399c6d99932a8
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a link farm and a callback lure suggests a phishing or scam attempt designed to lead the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=form+540-+es In PDF document text
    • http://madezezil.refurbishedca.com/uploads/1/3/2/7/132710621/3c90450caef.pdfIn PDF document text
    • http://files.pianolessonsbyjulie.com/uploads/1/3/1/3/131380868/59baef08.pdfIn PDF document text
    • http://files.foolsforchrist.net/uploads/1/3/0/9/130969115/gejisipuwibofokeveto.pdfIn PDF document text
    • http://zuxop.reeniemcmains.com/uploads/1/3/0/7/130776031/gezomowuzarax-birexodetezep-kisotaxog.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/1/0429/2745/6419/files/ip_reverse_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/26014934860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/diablo_2_maphack_1._14_d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2725/0848/files/ganoluri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/82002728703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/printable_eye_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/12373166242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/nalosoverepewujewuxuguxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81236671698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9854/6082/files/13634358523.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_off0000724c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 4928 bytes
SHA-256: 9a81d9e20d3bcccf4e38642f186cc508a7aff44c31ee65aea9ff334c8525e205
font_01_sfnt_off00008310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 10660 bytes
SHA-256: 0419cc7d37681fee6bd5af368cef9485ac7af08e8edc4313c6d658040f291c2f

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