Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e2b2561cfe26da…

MALICIOUS

PDF

48.8 KB Created: 2020-10-20 20:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e2c0a333d5069710649fdb156ac3b17c SHA-1: 59fdd0cee03d7d6080277f5f5bddf9ea5b5b9522 SHA-256: 17e2b2561cfe26da08060317707976abc816ce4569cdf9820b77075648454f6f
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, masquerading as an instruction manual, which is a common lure for phishing or malware distribution. One of the embedded URLs, https://ttraff.cc/123?keyword=sony+rx100+vi+instruction+manual, is flagged as a malicious redirector. The presence of a large number of external PDF links suggests a link farm used for SEO poisoning or to distribute further malicious content.

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://ttraff.cc/123?keyword=sony+rx100+vi+instruction+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f8b9f529297c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f89bf70ec81e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f8c3a27e77c3.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/vepivutazofam.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/nifika-vorise.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/ebb3635b0dac4c3.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/punafejolujediguvev.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3029889.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/07f2fd08-bd62-4096-ada6-9eed5fb35312/69108572878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/847c982d-8065-493e-97e9-c2cb9a2061f5/68398885904.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26ae4b6-09f5-42b3-aa96-80b425e5b38c/viwixokiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c66134f1-d9a1-4464-8825-5fdabdee59bf/42230172744.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/bekogasopuna.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/45987893482.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/jurukinakajojuwivides.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/39632401091.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/kovigejira.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/18994031008.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/81785948777.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/zadoguber.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/90398254427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6762/8440/files/49678969080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/pop_up_laundry_hamper_home_depot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4835/1944/files/53115986102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6991/3753/files/30714955492.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_off00007fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB3 5472 bytes
SHA-256: f92516bb1ccf5d9cb94cf1f021aca9847b15be85cbb68134acf5684ed958259c
font_01_sfnt_off0000923c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x923C 10344 bytes
SHA-256: 005e064dc8e1eac6ab4621332b3a4d77b5db3195e55bfe1885a46e33f924f4f9

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