Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b2ec5aa10ba0b0…

MALICIOUS

PDF

61.4 KB Created: 2020-10-30 21:57:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ece4069fc350dcb71b500b3760200fc1 SHA-1: 33a7470a7df4a9e6f81ce3078b3d1f74c46713ea SHA-256: 57b2ec5aa10ba0b0fdba7b51929f1c159f9cc4f91a84b8a1ca425b665a6c9e0b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though partially obfuscated, includes the URL 'https://cctraff.ru/pify?keyword=godzilla+vs+spacegodzilla+poster', suggesting a lure to a malicious site. The presence of many external PDF links further indicates a link farm or redirection strategy, likely for phishing or malware distribution.

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://cctraff.ru/pify?keyword=godzilla+vs+spacegodzilla+poster In PDF document text
    • https://disavapiviloma.weebly.com/uploads/1/3/4/3/134351159/622868.pdfIn PDF document text
    • https://sewuvemap.weebly.com/uploads/1/3/4/3/134377394/masusitezuvuna_bezojuz.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/1/0430/7274/9721/files/lulabenodiponunesogukizen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7e04ec5-687b-4c35-8be1-79301b5ced4d/45950825278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5105/6804/files/gudamexesexuparevidol.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/mapa_dels_climes_despanya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9169/6051/files/sbi_po_pre_2020_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/28135332570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1aca837-a49a-4157-9169-3a46420f8429/sukisewitabopixuseme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6268/0472/files/13069519453.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/livom.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_off0000a27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA27D 4256 bytes
SHA-256: 5a5fcb0bba81ef165294f8721fb715600d91964004390368303a8c99f3ff8995
font_01_sfnt_off0000b17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB17C 5384 bytes
SHA-256: 6fc78d1ec91942a9aa3d3f2b8d50bfcaec7450efe21953e379bcf68d7618b377
font_02_sfnt_off0000c3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3EE 10632 bytes
SHA-256: 08f5050bd66360ab8f5ee0365ecd45a2f45fb8ce8c5c7a59b86bc5d318cb3151

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