Malicious PDF — malware analysis report

Static analysis result for SHA-256 2188302739c5d8cc…

MALICIOUS

PDF

91.8 KB Created: 2020-10-25 18:20:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 068f6978a31552de87fdfe4f184fa861 SHA-1: ebbc05ebcb81d0af329dc40013e0a3f40c9c6b08 SHA-256: 2188302739c5d8cc5527bd480dffa2f8d19c2ef8761cd18bed1d98f61eb4eb0f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, including a known malicious redirector. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a likely attempt to redirect the user to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://gettraff.ru/aws?keyword=anthony+giddens+consequences+of+modernity+pdf In PDF document text
    • https://jusujonolixutuw.weebly.com/uploads/1/3/1/3/131379247/jobeg.pdfIn PDF document text
    • https://topemarepebide.weebly.com/uploads/1/3/4/3/134316461/329fd9e4d167ba.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/8267638.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/jogima_ravidugeka_jodub.pdfIn PDF document text
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/xikinibixut-roxavol.pdfIn PDF document text
    • https://tazeviguso.weebly.com/uploads/1/3/4/3/134339516/9564688.pdfIn PDF document text
    • https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/kupobilozo_bekaten.pdfIn PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/xajaxol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f8dcf8379439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368237/normal_5f8dc94473abc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6878/2757/files/bodoninatiburufafipado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/dorogodumifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2312/9505/files/62329182097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6263/7742/files/3568242361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2306/4488/files/16642070268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b0ee418-6a33-46cf-a20f-0f8f6b9fafe8/muxaburumimunot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aecd95a9-5df2-4943-bc35-d72eaae8911a/tomixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32348d3b-1289-430b-a148-7951a960064b/kokam.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/appalachian_trail_map_north_carolina.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/46877267085.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/biological_effective_dose.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_off000126e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E0 5544 bytes
SHA-256: c625f0e7e23c436ff962542a5d4ea2ecbba85335bb5a84471e4c7ebdba40edc2
font_01_sfnt_off00013995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13995 11856 bytes
SHA-256: d703fcb8132a28479db7c46377c49b3302eb2c70440e935e940614b0edbc48e0

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