Malicious PDF — malware analysis report

Static analysis result for SHA-256 147d00d2cd4677c9…

MALICIOUS

PDF

47.2 KB Created: 2020-11-09 13:13:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5e262ff061da2b1f9731b1ddff502e7e SHA-1: 3bb289cb72e10aa2558a8a58adf11365698512aa SHA-256: 147d00d2cd4677c92e7d0453e8a87cd0adfaaf0c060e9f07455fd13aff4af3aa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it hosts a large number of external links, likely for SEO manipulation. One of these links, https://traffnew.ru/aws?keyword=adw+launcher+pro+apk, is flagged as malicious. The document body also contains this URL, suggesting it's the primary lure. While no scripts were explicitly extracted, the nature of the link farm and the malicious URL suggest an attempt to redirect users to a malicious site, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?keyword=adw+launcher+pro+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f9d4f4f028c7.pdfIn PDF document text
    • https://bimuxafidiw.weebly.com/uploads/1/3/4/7/134701061/sikoluxudumori_nalowetifib_toginavapovuf.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://uploads.strikinglycdn.com/files/51be7a0e-ff2a-4890-99b5-13424ec23bee/46888135962.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/psychology_class_11_book.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/big_toys_direct_modesto_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766eda65-471a-4e17-a982-70d5c313c008/baby_g_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/26986589785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b21186f-c86d-41f7-a629-7996adbf3f44/66548934619.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/vitamix_professional_series_750.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/videoclip_de_porta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4298e3b-f0be-48ef-90e6-017cabbc4130/deserts_of_kharak_1.3.0_trainer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/634a29c8-168e-4f57-8c7b-0a64432ecac7/pedro_menendez_de_aviles_facts.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_off00006ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA8 4884 bytes
SHA-256: e4d4fac241a96298f71ecf5d4956fa61d5925b6e5c74d173ce5d91e450172380
font_01_sfnt_off00007f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F34 10264 bytes
SHA-256: dcdc951e0f8f07dda0ab10906099699e52e094e713b6499a566b09506c4de0cc
font_02_sfnt_off0000a25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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