Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47bf3ac60e61a1b…

MALICIOUS

PDF

47.7 KB Created: 2020-09-09 20:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f2743fbe8104fc8a4b94381aa3e3cf1e SHA-1: 73eb845a744b29e3ef4aae3ed0a608c86f91ad1b SHA-256: d47bf3ac60e61a1b3f44e039dd14fc3cdea6d1199d07fd8ab0ce27d910690744
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body and metadata suggest a lure related to PDF manipulation, likely to trick users into clicking malicious links. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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.club/wix?keyword=couper+un+pdf+en+plusieurs+pages In PDF document text
    • http://files.andreareynolds.net/uploads/1/3/0/8/130814926/645ba796a3e.pdfIn PDF document text
    • http://files.garagedoorsandmotorsipswich.com/uploads/1/3/2/8/132815054/tukadiw-xosozopuvipa.pdfIn PDF document text
    • http://files.reefshawproductions.com/uploads/1/3/1/3/131398143/dutuzunemiroxaki.pdfIn PDF document text
    • http://files.michelsacademy.com/uploads/1/3/2/7/132712315/67b8578.pdfIn PDF document text
    • http://files.yallbeetubin.com/uploads/1/3/1/4/131437891/sukufeguk-bujamet.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/1/0433/0687/7080/files/vebamuwonodivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/zegotepubidij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3997/3788/files/rolodol.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/95b9ea_7c2879a6ac514c9e867cc2045ae56956.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/96768c_8731ce199fe2458eae233a027796abc8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/10655075871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/zodirajuluviwanazog.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_off000078ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 5112 bytes
SHA-256: 8bbc9c86c21976a4002dd0916b14943a4903e309508e633094021d33ccd246e4
font_01_sfnt_off00008a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A62 12024 bytes
SHA-256: d6fedc404e552c760d09e2d5b8ad8d56249f0607d0952adfe482acf76bf27311

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