Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b1ca5991ca78027…

MALICIOUS

PDF

48.3 KB Created: 2020-08-05 08:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ee4758c212b2e50c1bf72ed9235d23e SHA-1: 5a9c4d809add9527ef5afc38e2f3137d8ef98af6 SHA-256: 5b1ca5991ca780278440a1ad5657bea9217e75166e36d7501b456f13f5756b72
222 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to distribute malicious content. The presence of a 'download button' lure and a callback lure further supports a phishing or scamming intent. The primary redirector URL is https://ttraff.ru/pify?keyword=mca+cet+result+2020+pdf+download, which likely leads to the actual malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=mca+cet+result+2020+pdf+download In PDF document text
    • http://files.nadinenapear.com/uploads/1/3/1/3/131379706/ce56e3239374e9.pdfIn PDF document text
    • http://files.pinkturtledesigns.co.uk/uploads/1/3/0/7/130776368/78a451b1d.pdfIn PDF document text
    • http://files.okto8online.com/uploads/1/3/0/7/130776682/juluko-zubofog.pdfIn PDF document text
    • http://ririxulo.highdesertptcortez.com/uploads/1/3/1/8/131871721/4483871.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/86256545354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/vuxububobumebewuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/xalupuzolokijibikir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/xuvufuwurujusujow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7084/9177/files/algebra_1_workbook_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/41229649365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6359/7466/files/94660335105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/questions_on_rational_numbers_for_class_8_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/sajake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/76642817097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/gafijifipez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/sikujovikurogud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/mawozapojotiwabepu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000707a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707A 5352 bytes
SHA-256: b732013b698d5caa0ee45eca20c0078aa83bfaaa025345c03f8c7fa306e17b9e
font_01_sfnt_off000082d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D5 10304 bytes
SHA-256: 4f426b019c4bd2b9bfcc66c96373889781dce3c24aba76fee9f02cad08b6cb7c
font_02_sfnt_off0000a61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA61E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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