Malicious PDF — malware analysis report

Static analysis result for SHA-256 74294613969c36ec…

MALICIOUS

PDF

41.7 KB Created: 2020-11-01 06:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 24003195d1e5d5803e589e89bb84aaac SHA-1: b6fcc41b23d985153bba76399262d4b215e63ea3 SHA-256: 74294613969c36ecbea146b7eb83e156ec13853fd34c98ca80a3bf813a02d2b3
154 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to containing a large number of external links, with one identified as a known malicious redirector. The document body contains obfuscated text and a URL that appears to be part of a link farm or SEO manipulation scheme. While no scripts were explicitly extracted, the presence of numerous links suggests an attempt to redirect users to potentially harmful content or to influence search engine results.

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://ggtraff.ru/aws?keyword=the+prayer+kid+cudi+sample In PDF document text
    • https://sivirezu.weebly.com/uploads/1/3/4/4/134445297/9264405.pdfIn PDF document text
    • https://zemexiwum.weebly.com/uploads/1/3/4/3/134330210/gomus.pdfIn PDF document text
    • https://rinedasufuketon.weebly.com/uploads/1/3/4/3/134340565/ff8165d9f8.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/ee36dac2-245c-452b-b114-e873c574e64f/bigob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6692/3426/files/roromeba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/239f3aad-a9c5-44bf-a0e7-8b5966eb017b/determinantes_posesivos_ingles_ejercicios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6928a63d-04ba-40f1-9f4e-f6104e68e153/25280726609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3783cd9d-1863-4bd0-86ec-c43eba88aacc/gifarinuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b503ae6d-75fe-4722-9f4f-6f263883a099/jarijuwekobafafalog.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/deep_love_quotes_for_him_from_the_heart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2702/6079/files/73385080700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5138/2462/files/34550407056.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/50065583008.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_off000063a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 5428 bytes
SHA-256: eadadd945e2a18e0f6330c22d971a4e29f7dfc8853d6fd50311d410652db2783
font_01_sfnt_off000075f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F9 10696 bytes
SHA-256: d22406291da8c9ddbf9b4e94b2a13a15ce0d5c7eed85b876953dc093ff654ee9

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