Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60a8525969bfaf5…

MALICIOUS

PDF

36.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 37e35b743c50261c410383bcebb0b1d2 SHA-1: c63d7ce12f66eb831f2fe364793ed5d478d7903a SHA-256: c60a8525969bfaf526e30484c16cfbb4fa99e4b9ef63dd95ae82b4cb4014a824
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body contains garbled text and references to 'Adobe PDF Library 9.0 Plugins', suggesting it is not intended for legitimate user consumption but rather as 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://stjohnvianneymorisset.com/uploads/1/3/0/7/130739538/binuwolidikimixaga.pdf
    • http://imaginarylabs.net/uploads/1/3/0/7/130775405/dunukodirunival.pdf
    • http://sarahwk.com/uploads/1/3/0/2/130289154/vutozoga.pdf
    • http://rikatsutsui.com/uploads/1/3/0/6/130605416/ac49a2aedd.pdf
    • http://goldensita.com/uploads/1/3/0/6/130604375/5965964.pdf
    • http://ozaymobilyadekorasyon.com/uploads/1/3/0/7/130775027/156556.pdf
    • http://04061985.xyz/uploads/1/3/0/7/130776250/xuxesakepajomem.pdf
    • http://harvestleaders.org/uploads/1/3/0/2/130287875/c9285020a61d6.pdf
    • http://silvacheng.com/uploads/1/3/0/5/130551491/af9296ff.pdf
    • http://nakedpavementbooks.com/uploads/1/3/0/3/130379352/gatapatuzulegawefax.pdf
    • http://shop.lehighvalleychorus.com/uploads/1/3/0/5/130539642/fawilibapugada.pdf
    • http://danaligt.com/uploads/1/3/0/6/130604739/sixebavawadi.pdf
    • http://mollymagdalain.com/uploads/1/3/0/6/130620803/duluzebedux_ludon_wumipimu.pdf
    • http://tamingbigfootseattle.org/uploads/1/3/0/6/130639175/dusajexopiji.pdf
    • http://aesco.com/uploads/1/3/0/3/130312920/9050199.pdf
    • http://helpingkidsforchange.org/uploads/1/3/0/6/130639224/4761783.pdf
    • http://2015mcc.com/uploads/1/3/0/8/130874039/xovakodojijegid-rozija.pdf
    • http://banvej.dk/uploads/1/3/0/3/130313585/a264b9bd7a39d.pdf
    • http://gabbykerrfitness.com/uploads/1/3/0/3/130379653/b2715bf.pdf
    • http://dedicated-3.pleasingfood.com/uploads/1/3/0/8/130814112/130814112.html#plugins+para+adobe+after+effects+cs6
    • http://mollymagdalain.com/uploads/1/3/0/6/130620803/duluzebedux_lud

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003036.bin
5dd387589a9ebb4dcd456afb06208e6733b76f3ad06433028ce0ce144b3c8b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3036 7632 bytes

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