Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be52f330a6a23d0…

MALICIOUS

PDF

77.3 KB Created: 2020-12-23 09:42:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ff8cf7b9bdecb46e98efa9446534ffad SHA-1: 9d4a1e0129acaa54eb957f95b34028746efa8271 SHA-256: 2be52f330a6a23d07944e7bd2d2eccb9cbfef3e4567e2a501b99c9dc1a231568
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm and redirects to known malicious infrastructure, indicating a phishing or scam attempt. The embedded content, though obfuscated, likely serves as a lure to encourage interaction with the malicious link. No scripts were extracted, but the PDF structure and linked URLs strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffmen.ru/aws?utm_term=bfgoodrich+all+terrain+ko2+snow+performance In PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/770021.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/8c756404-679a-436a-a41a-7d9066d79717/sony_mhc-bx5_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ad6f59-be81-4691-a8ac-a4caa6bc0b62/40418760553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45564620-c0a8-46ba-a9a2-363d824c7673/old_fishing_lures_worth_money.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10303bdb33045eec2ea8e/t/5fcb87169cf56e0e8b12ec50/1607173911464/vomiting_blood_after_pregnancy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a2af7848ba205d23b5ba/t/5fccedf4662d5e24e0a2eca6/1607265781411/58212512760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f73b692-06d9-4df9-b8f2-f3ab1e670370/93214654966.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52a646b97992eb5777856/t/5fd62c4c9264095525cc99c4/1607871565365/36807416480.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5693fbe9b693951291b9c/t/5fc97649c8e99239e004a848/1607038538244/warfighter_outfitters_apparel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69639207-14ab-4e3f-b926-31831b9e9a0f/burrito_method_pillowcase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c64d9f0-42b6-4186-8549-c02edeb51f70/archivo_civil19.arx_de_civilcad_no_p.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58d04cd1e280355f3c276/t/5fce6f949be09301bb23cd41/1607364500931/parlour_x_promo_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c5d79b-71fc-4e7c-9eff-67a380ac2bae/circle_of_fifths_piano_printable.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3F 5908 bytes
SHA-256: 2329f2d1c17b3481f9411036fdbac35d0ec3a05df244c2a03cc3a570ba1e9de0
font_01_sfnt_off00010256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10256 11028 bytes
SHA-256: 58081ec075ae56e3724f0313c487e4b038410e2f62c5d78027011731135ffbbc

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