Malicious PDF — malware analysis report

Static analysis result for SHA-256 c21eed1196069023…

MALICIOUS

PDF

52.1 KB Authoring application: LibreOffice Draw
MD5: 3074ba67115fdb93e06c8af2091316fe SHA-1: 01ad7aa2b4c0ad148a9490519916451d303445c3 SHA-256: c21eed1196069023e32c694a69527db6ebde730a5f09d6f525c480ee438e47bc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The critical heuristic firing for PDF_SEO_LINK_FARM reveals a mass of external links, with the first being http://nycasianescortscall.com/uploads/1/3/0/6/130621812/kepumivalisala.pdf. This suggests the document's primary purpose is to redirect users to potentially harmful websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://nycasianescortscall.com/uploads/1/3/0/6/130621812/kepumivalisala.pdf
    • http://gypsydenisse.com/uploads/1/3/0/5/130541656/loxuxajijo.pdf
    • http://myclarendonhills.com/uploads/1/3/0/3/130313405/tuziwal_jizupakuzag_xutopijudipano_sesifum.pdf
    • http://neighborhoodcatadvocates.com/uploads/1/3/0/6/130639548/fejej.pdf
    • http://scrummages.com/uploads/1/3/0/7/130739472/2252854.pdf
    • http://owenmuirmd.com/uploads/1/3/0/2/130291545/95e856c0.pdf
    • http://ib5k.net/uploads/1/3/0/5/130588505/vemewirolodefo_sajurivoguteku_zubobanav.pdf
    • http://annearundelbiz.com/uploads/1/3/0/5/130547924/panizukiwelo_mafexujenoxeleb_tudenunagaxejor_pidadeju.pdf
    • http://nomadcc.com/uploads/1/3/0/3/130379178/20e97.pdf
    • http://rambosiu.com/uploads/1/3/0/6/130603989/1232932.pdf
    • http://youngscientistsseachest.com/uploads/1/3/0/6/130639183/5506123.pdf
    • http://canyoncitygrill.com/uploads/1/3/0/6/130604911/130604911.html#bluefish+html+editor+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001014.bin
7b3d05a1699f5fc82f285d6820a2351769260f6193f016548fc3a069180686fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1014 8548 bytes

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