Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c2acfa8ec447dc…

MALICIOUS

PDF

45.4 KB Created: 2020-10-11 12:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 392c2098143b2780526173d5a85f2116 SHA-1: 6960c4213b39b4c8d597a54c954110b58e8b7860 SHA-256: c2c2acfa8ec447dc84477e5dee865e4d7f4cc37115ac1308e64d63de611422ed
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://cctraff.ru/pify?keyword=peg+perego+double+stroller+aria In PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/lexigimefukixa.pdfIn PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/vuketitirumun.pdfIn PDF document text
    • https://site-1039878.mozfiles.com/files/1039878/rixurimakemav.pdfIn PDF document text
    • http://somag.wtlaverack.com/uploads/1/3/0/8/130874655/582d4.pdfIn PDF document text
    • http://sirokox.r2mechanicalinc.com/uploads/1/3/1/4/131455463/607dd830972ddee.pdfIn PDF document text
    • http://files.m-w-consulting.org/uploads/1/3/0/7/130775354/03652c34942.pdfIn PDF document text
    • http://sixowawo.stnicholaselearning.ca/uploads/1/3/0/9/130969449/9041926.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/1/0486/2869/5205/files/the_westing_game_character_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9720/3886/files/boporerikigorutetudoduber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6474/1025/files/lidadafasewetemifebowazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b290d90-a43a-4317-afdb-11aa920998c5/wogola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b879dd6-cfaf-499f-910c-28c6b261e932/dawezuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a7df87-89e2-4ed7-b928-edb0143a0dab/27773250860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25628ed5-66f9-4e86-ac57-cb2713af09a9/17203542279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e429e389-9c87-4435-a9c3-67290c41800e/bavesijezutomaxinixana.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5044 bytes
SHA-256: 45adf8f3d04ecd6f001bd63eba28df12d1c4c8163346eeb156290ef2c2a5c30d
font_01_sfnt_off000070f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3 12472 bytes
SHA-256: cfaf1b12706496ab140fa8720f3339bf886d8e12aae39aff4738cdc81054a280
font_02_sfnt_off00009902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9902 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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