Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2ab0259f9693f4…

MALICIOUS

PDF

41.7 KB Authoring application: ImageMagick
MD5: 5035f2334fefc95464628fc4fcac7192 SHA-1: 545ea9ed3fb157b187a41e61021e1c47a69b8181 SHA-256: 6d2ab0259f9693f4cee0ac28c1311e8a8f18f5867ba64aa547039125960e02ad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and an ML classifier also flagged it as highly malicious. The document body itself contains obfuscated text and references to 'Usp buffer solutions', which appears to be a lure.

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://ciarawiegers.com/uploads/1/3/0/5/130550704/wafip-vezusilowiba-kesexewize.pdf
    • http://oatbardicschool.org/uploads/1/3/0/2/130272921/8644233.pdf
    • http://zivugero.minzdravbioshop.ru/uploads/2020/01/29/ba985.pdf
    • http://nochemicalsneeded.com/uploads/1/3/0/4/130476034/8402047.pdf
    • http://lonarinivi.swetozar.ru/uploads/2020/01/27/mugirelivimexox.pdf
    • http://nexuspointrecordings.net/uploads/1/3/0/5/130547038/demixinuzitafu.pdf
    • http://nolimit.fun/uploads/2020/01/27/bojusoxuk.pdf
    • https://jimodudidifuv.weebly.com/uploads/1/3/0/5/130588499/24a214b6c5790d.pdf
    • http://mindandhomeinsurance.com/uploads/1/3/0/2/130289592/fojudiwuguse.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/4/130488631/130488631.html#usp+buffer+solutions
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000122d.bin
bd9cd540be1acd4e97f3c35628cafd327a85526160a80c26bcb019f248a04e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122D 9140 bytes
font_01_sfnt_off00006482.bin
92960e0e807263a12bad55ec69bafb6714c32758af60e957fa6a07630d5d1445		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6482 4156 bytes

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