Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67727e5dbc021d2…

MALICIOUS

PDF

71.0 KB Authoring application: LibreOffice Draw
MD5: c9b250b307331d0222704d4a373eed39 SHA-1: f2c98976c2ba9f7761971b7d493a0b6ec3ebf353 SHA-256: b67727e5dbc021d29cd8be8f0bac2d7dbea7523847841ea848e08e0085a51950
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links pointing to external PDF files, a technique commonly used for SEO poisoning or phishing. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a malicious intent. The document body, though partially corrupted, contains references to 'Sujok therapy books in tamil pdf' and affiliate linking, suggesting a lure to entice users to click on the malicious links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gepaxujijo.giperfile.fun/uploads/2020/01/28/cf3e1.pdf
    • http://rockymountainhighimages.com/uploads/1/3/0/6/130605255/4278600fef2.pdf
    • http://bethlehemhouse.org/uploads/1/3/0/4/130483606/lojakarulu.pdf
    • http://holypost.us/uploads/1/3/0/4/130476873/8146126.pdf
    • http://buildyourbody.online/uploads/1/3/0/4/130488322/wugerukemudajujuruvu.pdf
    • http://newhereiam.com/uploads/1/3/0/6/130621582/jutusuvilokow_tasavinaguzoge_bazizefuxira.pdf
    • http://alonsorios.com/uploads/1/3/0/6/130620804/sitinadofitonazi.pdf
    • http://christchurchportland.org/uploads/1/3/0/6/130639895/rukegoregarozadolim.pdf
    • http://smartestbusinessmodel.com/uploads/1/3/0/6/130620687/sevizuniwo.pdf
    • http://art2artexhibitions.com/uploads/1/3/0/3/130379169/bazitesifuje.pdf
    • http://neokundalini.org/uploads/1/3/0/6/130621187/130621187.html#sujok+therapy+books+in+tamil+pdf

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fed.bin
d849fe9424f0113e417b6a2e540e834687363cfa075695b8ace47ed2ed480bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFED 9728 bytes
font_01_sfnt_off0000a44e.bin
3eb4b2cea5944beed14372be996492f8da05ecb2c2a1d392e04caf7671f8bd8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA44E 10720 bytes
font_02_sfnt_off0000bb77.bin
b74003b57c5d20632f15dda97ac2c6dcff531cc8f4e8c3eef5ff612979520175		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB77 8200 bytes
font_03_sfnt_off0000d0a3.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A3 16036 bytes

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