Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f80db83eaa3565…

MALICIOUS

PDF

42.5 KB Created: 2020-10-08 14:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 856e569408d6e13528b442bfad53c7b7 SHA-1: 08279af0572fdec5b85dd80745f7260af7fd6736 SHA-256: 32f80db83eaa35652a4cd999324a8cb22641c7f66a43081494a24d3ed85072eb
184 Risk Score

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=lobola+letter+template In PDF document text
    • https://site-1042453.mozfiles.com/files/1042453/zirovovu.pdfIn PDF document text
    • https://site-1042343.mozfiles.com/files/1042343/xizipibuzajug.pdfIn PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/wekidira.pdfIn PDF document text
    • http://files.rabbitomsamuels.com/uploads/1/3/1/4/131453749/livoko-petunenoru.pdfIn PDF document text
    • http://files.foreningenbornholm.dk/uploads/1/3/0/7/130775756/7521177.pdfIn PDF document text
    • http://files.mindbodysoulutions.org/uploads/1/3/0/7/130740022/810e1ccf6c.pdfIn PDF document text
    • http://zivivove.beatricemennonitechurch.org/uploads/1/3/2/6/132680977/9453872.pdfIn PDF document text
    • http://mafimuz.brasscustoms.com/uploads/1/3/2/3/132303124/dc6f6024e.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/89133a15-30d5-4633-b2c7-9ac0c61cbc65/96268050312.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ef2d1b-4441-42c7-bcd4-845fb309a09d/24416698394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b4029e-0e78-4089-b9ff-0fb3322b937b/41493512903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c6c7ba7-5923-42af-bbb8-c0446ea1ff8a/zesukife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f982bb4-f983-43c6-9ba2-c025cfb53d41/85810405192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/lebepumerawonupaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9713/1670/files/dubuzebonot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/9778/0127/files/neniruwub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8565/4942/files/canon_artistic_matte_canvas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2147/9331/files/sanirepanilefizoxojoborev.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_off00006a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A52 4868 bytes
SHA-256: a470cd5065eded9b59878160ede2ac510ccf56e8a6e9119e02401233f6d361c7
font_01_sfnt_off00007ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC7 10028 bytes
SHA-256: 171ff5b8abe0f46f03725c8606aaf5f38baae5755b3966a75911382d365ad571

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