Malicious PDF — malware analysis report

Static analysis result for SHA-256 14432b38bd997fb5…

MALICIOUS

PDF

51.1 KB Created: 2020-08-01 08:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fd3c5c3180bb46559677a235d26a049f SHA-1: 289e4aeb28b4bffcf21204f29dc903d33dc63f7e SHA-256: 14432b38bd997fb52e9eea10bcc02a394d3c6d2203d9abcc0ca3f7f5c7afc0ba
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for torrent downloads. The presence of numerous external PDF links suggests a link farm or redirection scheme designed to obscure the ultimate destination.

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.ru/pify?keyword=star+trek+voyager+torrent In PDF document text
    • http://files.positivitymagic.com/uploads/1/3/1/0/131069832/d7906cd.pdfIn PDF document text
    • http://files.heartlandwestfargo.com/uploads/1/3/0/9/130969658/1d37df34.pdfIn PDF document text
    • http://files.stmarybythesea.com/uploads/1/3/1/3/131381675/0ad2d5.pdfIn PDF document text
    • http://files.baitmandave.com/uploads/1/3/1/4/131408142/banukad.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/1/0430/7822/1973/files/wixorolowazat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/xikeforujageno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/45379873631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/kuwabegit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/sesijofufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/voxulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/55395644202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/89925121453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/wepebijezinunimolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/97612316265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/59845312070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/88678706859.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_off00008a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 4972 bytes
SHA-256: 702fab653e16f54d017dff3aae50607e8e29c17a02d9789431428b19c192a5c9
font_01_sfnt_off00009b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B9D 10496 bytes
SHA-256: 04e71062995b94b7d5bb296a3ed5dcb2b566eabdd1496b3edf7b222f8de8b582

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