Malicious PDF — malware analysis report

Static analysis result for SHA-256 e949d5a2ba237c49…

MALICIOUS

PDF

40.7 KB Created: 2020-11-03 07:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c268011f031c226d96e807258137ae7e SHA-1: 1547fce1efd7513704d17a6682457b1ad67d989b SHA-256: e949d5a2ba237c4910a30652bf76ae2a8e0561f3fc45bd05ef1bc514053e0d1b
152 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 3

  • 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.
  • 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://gettraff.ru/strik?keyword=spite+cannon+2+flash+games In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f97d95a6f487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374686/normal_5f90d7b81a0c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5f969831240f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f8bd3219047e.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/jinakapurepe.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/gozesimoruwawe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5f882f12e10ed.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/1/0503/2896/1191/files/wopabesisozobidukip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4195/5221/files/rwo_oily_water_separator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/semogididu.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/27035251732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0510/7223/7733/files/multiple_a_doll_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5171/9074/files/anna_maria_mayda.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/scientology_materials_guide_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/words_that_start_with_biography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe5491a2-5ffd-4c20-9f6a-4b7bfaeec53a/danganronpa_v3_trial_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/sinogovaxedizinez.pdfIn 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_off000068e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 5356 bytes
SHA-256: 1ba6e9896c0b1a11a2abdc66ab3b8094a88e60767790efa7aaf2ea13cdf52376
font_01_sfnt_off00007af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF0 10712 bytes
SHA-256: 833e5781fb9c328f7b217830b24d5859e5942da35e24488895ebce7b83dd6e86

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