Malicious PDF — malware analysis report

Static analysis result for SHA-256 8890735712c72fcb…

MALICIOUS

PDF

34.6 KB Authoring application: Pdftk
MD5: 3094ed0d5751632529ef57bb3a5bc565 SHA-1: e2f8bed2c6ea787f633acc3e8230badaf5d2e19c SHA-256: 8890735712c72fcb0e51a39ac521c91e357dfab72d39c1ac7f504f3043f646df
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, identified by the 'PDF_SEO_LINK_FARM' heuristic, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the embedded URLs are likely used to download further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://bluetp.com/uploads/2020/01/27/fesukujoxadi.pdf
    • http://cfcfbla.com/uploads/1/3/0/2/130287285/1158626.pdf
    • http://dgdiamondgalleria.com/uploads/1/3/0/4/130476657/joroji.pdf
    • http://wifiavto.ru/uploads/2020/01/28/3018624.pdf
    • http://kallure.shop/uploads/1/3/0/5/130543166/rabisizawipejod-zewinuda.pdf
    • https://witoxovi.weebly.com/uploads/1/3/0/3/130379371/e66c793c70b4f4.pdf
    • http://willowtreefarminc.com/uploads/1/3/0/5/130589178/20380968.pdf
    • http://obsidianmarkets.com/uploads/1/3/0/6/130621606/4754440.pdf
    • http://were.saylove.info/uploads/2020/01/27/fadenisutupaxi_mutuwapote_vebokux.pdf
    • http://amsnorcal.com/uploads/1/3/0/5/130590291/wazogaz.pdf
    • http://buve.toowibook.com/uploads/2020/01/28/wikufizerozil.pdf
    • http://mibakaf.mindcraftstudio.com/uploads/2020/01/27/2100207.pdf
    • http://custompalletdecor.com/uploads/1/3/0/5/130588654/gavotuzoduno.pdf
    • http://duguw.lechenienarkomanii-ivanovo.ru/uploads/2020/01/29/459dfebc8.pdf
    • http://yessicafandinofiore.com/uploads/1/3/0/5/130543787/pamopisozutexa-somoraz.pdf
    • http://mydevice-apple.com/uploads/2020/01/27/1129664.pdf
    • https://lafonapof.weebly.com/uploads/1/3/0/5/130543333/e34ccd.pdf
    • http://newstylemarket.com/uploads/1/3/0/3/130313177/130313177.html#circuitos+el%C3%A9ctricos+por+charles+sis

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014c6.bin
5ed158495f5509921ae80a59b58671f387428bc412db6a444b96346e9242c9dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C6 9092 bytes

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