Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b64e22b9f58665…

MALICIOUS

PDF

42.8 KB Created: 2020-10-25 22:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1afcc5ada77044fd8e05ea0c1c15094e SHA-1: 5999d240a99a0a234ec80ee60077a077aac27e3a SHA-256: 52b64e22b9f586657570273042493448133bccc266c8eec330ef5d445780c4fd
122 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.club', which is flagged as malicious. The document body, though heavily obfuscated, contains references to 'union bank upi app apk', suggesting a financial lure. The presence of embedded URLs and the ML classifier's high confidence further support a malicious classification, likely involving a phishing or malware download attempt.

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.
  • 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) 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.club/123?keyword=union+bank+upi+app+apk In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/taxejupozefeb-rufewodu-zezofowozebo-tupatokurisina.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/makufimujafo.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/4198643.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kogunipigof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/488270ad-919c-40db-9d4f-1a1ddbe77bea/majasizipulepolugevodika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a450c17-298a-4501-875b-fa8a993d1471/pijupakufafojidemisedire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde78482-b59b-4b20-b0d9-f40826799902/75876385858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fa6ed1-913e-4352-b519-77c450d14d33/bolipajumam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d0412c1-28cd-4a4d-99b9-67388df274d1/lalinomonateparesubopenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6424/8470/files/fisiopatologia_da_osteoporose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7563/1780/files/singer_florencia_45_manual_de_uso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1773/1733/files/problemas_resueltos_sobre_caida_libre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7309/2766/files/bidifolikid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9189/3666/files/17458093342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0ba8ad6-f0b7-471b-893f-e218431ce713/2730508759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/344035be-7f40-4870-838a-c6c25ff51cbe/jawiduvavobowesozunazo.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_off0000682b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682B 4704 bytes
SHA-256: 0c79a27e7fcf28664a6408b0f0af9ab39e757296989f322b6c646d5d209ac748
font_01_sfnt_off0000783d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783D 11304 bytes
SHA-256: c26cf34573ceff41c0c9b7e7c19c156744c7751f15460535b47011d0bc9b396e

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