Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d7441d985c2828…

MALICIOUS

PDF

57.5 KB Created: 2020-08-30 15:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a1702b18726e94f4f1656ef0fdb2ba3 SHA-1: 4ed0b5433335123ff25f9d8ab00c46a6e27c080f SHA-256: 80d7441d985c28284deab5608cca3ea2af1bb1781631a9d07fa221503d916f4b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate academic or informational content, but it redirects to a known malicious domain. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious sites or downloads. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.com/wix?keyword=comment+faire+une+etude+de+gestion+s
    • https://cdn.shopify.com/s/files/1/0438/0858/7938/files/benim_hocam_trke_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/gotup.pdf
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/living_without_fear_ernest_holmes.pdf
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/arabian_desert_information.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5708/files/42002051468.pdf
    • https://cdn.shopify.com/s/files/1/0457/4583/2092/files/jadijeliwanilumodunenuku.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/yamaha_rx_v385_review.pdf
    • https://static.usrfiles.com/ugd/b8c837_344215e993c5403eb9505e7d16cfb44e.pdf
    • https://static.usrfiles.com/ugd/ee6770_95334835d84649d08ed082c0b7bdd34b.pdf
    • https://static.usrfiles.com/ugd/83b1b3_2071fdf34e0d443bad13f4bb007389d2.pdf
    • https://static.usrfiles.com/ugd/52b593_4f6b7e490bf944dda3ef09663ac9abbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3970dcf940a419e8db6405f4b8fbe54.pdf
    • https://cdn.shopify.com/s/files/1/0436/5657/7182/files/occurrence_variance_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/3026/5511/files/data_mining_paper.pdf
    • https://cdn.shopify.com/s/files/1/0437/8689/5512/files/kulumosazorunorodiwef.pdf
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/jisesigudajukerepojo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008836.bin
2cf17b84448c59a48e7103262e5b2c39b84e50c034558e472a91f1043f53d6db
pdf-font-stream PDF embedded font (sfnt) at offset 0x8836 5100 bytes
font_01_sfnt_off0000996f.bin
38f32e119e4d56d4ebe8006e41f4ded4badfc3747f903612ab39e63e3ace2202
pdf-font-stream PDF embedded font (sfnt) at offset 0x996F 12696 bytes
font_02_sfnt_off0000c12f.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0xC12F 16204 bytes