Malicious PDF — malware analysis report

Static analysis result for SHA-256 1447cbe429f9562a…

MALICIOUS

PDF

68.1 KB Created: 2021-03-20 21:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08d080fe34b9789d193c029e95b82550 SHA-1: 6c8b218c7d45a77374904b66ecc55884497201cf SHA-256: 1447cbe429f9562abd3140a2d506b16c632d7faa93a8c17c610ef83524cb47bc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF documents. One of these links, https://fokemale.ru/award?keyword=alice+miller+libri+pdf, is directly embedded in the document. ClamAV also detected this file as Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0, indicating a phishing or trojanized document. The ML classifier also flagged it as malicious with a high score.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8464

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/award?keyword=alice+miller+libri+pdf
    • https://gotanizanoga.weebly.com/uploads/1/3/5/3/135332446/1237435.pdf
    • https://deledixedebudon.weebly.com/uploads/1/3/4/4/134499708/2655436.pdf
    • https://mefimume.weebly.com/uploads/1/3/1/4/131437875/werixe_welubamejebaruj.pdf
    • http://seweripuwas.mywebcommunity.org/japufitexenog.pdf
    • https://fasexunatosupa.weebly.com/uploads/1/3/1/6/131606354/207ce677e9deb.pdf
    • https://cdn.sqhk.co/petebeki/Tihjihh/sujaj.pdf
    • http://bukapim.mywebcommunity.org/rexebiwifanuvamo.pdf
    • https://kevonixoxudunu.weebly.com/uploads/1/3/0/7/130775897/ed8efa889ef186.pdf
    • https://cdn.sqhk.co/torazanopuni/lvgc8je/mr_ninja_online.pdf
    • https://mupasifuv.weebly.com/uploads/1/3/2/6/132680827/05086e.pdf
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/buliwebu-lojipezuwopek-falogovutiper.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wazorixekunafob/86168282648.pdf
    • https://uploads.strikinglycdn.com/files/e257a7f7-9d5b-45e5-ac3c-0022cb2712ee/what_is_a_public_relations_assistant_job_description.pdf
    • https://s3.amazonaws.com/vapelurowar/12592859224.pdf
    • https://s3.amazonaws.com/vikukinumet/65327556289.pdf
    • http://kuxoxokazutuv.myartsonline.com/bofixawuto.pdf
    • https://uploads.strikinglycdn.com/files/e05a4dcf-cd71-4205-a8d3-fae004200ea8/what_does_bad_blood_mean_in_english.pdf
    • https://s3.amazonaws.com/bejenosugede/the_bfg_hollywood_movie_free_download.pdf
    • http://jelunegizubu.atwebpages.com/tezezemisezarivipemerune.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f706.bin
1ca2842e605793f6f7280fc68ddfa36c29c0471143064cc37fbc4c6933e0b9ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF706 5044 bytes

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